Oceanic Defense: February 2010

2.28.2010

Waiting to Inhale: Deep-Ocean Low-Oxygen Zones Spreading to Shallower Coastal Waters

Oxygen-deprived areas in the world's oceans usually found in deeper water are moving up to offshore areas and threatening coastal marine ecosystems by spurring the die-off of some species and overpopulation of others

A plague of oxygen-deprived waters from the deep ocean is creeping up over the continental shelves off the Pacific Northwest and forcing marine species there to relocate or die. Since 2002 tongues of hypoxic, or low-oxygen, waters from deeper areas offshore have slipped into shallower near-shore environments off the Oregon coast, although not close enough to be oxygenated by the waves. The problem stems from oxygen reduction in deep water, a phenomenon that some scientists are observing in oceans worldwide, and that may be related to climate change.

The hypoxic seawater is distinct from the well-known "dead zones" that form at the mouths of the Mississippi and other rivers around the world. Those areas result from agricultural runoff, which lead to algae blooms that consume oxygen. Rather, the Pacific Northwest problem is broader and more mysterious.

Shelf waters off the Pacific Northwest extend anywhere from 30 to 80 kilometers offshore and lie beneath the California Current, one of the richest marine ecosystems in the world. Francis Chan, a senior research professor at Oregon State University, has been monitoring the area's low-oxygen events, which normally peak in the late summer months. "Oxygen is just about the most crucial necessity for anything biological," he says.*

Chan is one of a number of scientists alarmed at the dramatically reduced oxygen levels showing up in these waters. In fact, the Oregon Department of Fish and Wildlife put submersible vehicles off Oregon's coast during a hypoxic event that went anoxic (oxygenless) in 2006, he says, monitoring conditions and recording numerous carcasses of sea stars, sea cucumbers, marine worms and fish.**

Lothar Stramma, a physical oceanographer at the Christian Albrechts University of Kiel in Germany and his associates describe the hypoxic problem as global in a paper accepted for publication in Deep-Sea Research , stating that tropical low-oxygen zones have expanded horizontally and vertically around the world, and that subsurface oxygen has decreased adjacent to most continental shelves. Low-oxygen zones where large ocean species cannot live have increased by close to 5.2 million square kilometers since the 1960s, the team found. Where this expansion intersects with the coastal shelf, oxygen-deprived waters are slipping up and over shelf floors, killing off creatures such as crabs, mussels and scallops. Such bottom-dwellers normally have a lot to eat in such rich ecosystems, but these species are sensitive to oxygen loss. Similarly, the anoxic ocean at the end of the Permian period (around 250 million years ago) was associated with elevated carbon dioxide and massive terrestrial and oceanic extinctions.

Lisa Levin of the Scripps Institution of Oceanography in La Jolla, Calif., says that as oxygen-starved layers move upward, large animals such as marlin, tuna and sailfish will be forced into ever-shallower waters. "That may be good for fishermen, but it also makes it a lot easier for fishermen to fish these species out of the ocean," says Levin, who worked with Stramma on Deep-Sea Research .

Biodiversity will be the big loser as these low-oxygen zones knock out some species and promote others. Among the big winners is the Humboldt squid, which can tolerate low oxygen; it has expanded its range in the northeastern Pacific in the past 10 years, from the Gulf of California all the way to southeastern Alaska. Biologists worry about the hunting pressure the squid will put on other species.

Increases in jellyfish blooms also are likely to be part of the process. Levin encountered such blooms recently in low-oxygen environments off India's coast, where "the jellyfish were as thick as soup," she says. Larval fish are especially susceptible to low-oxygen ocean zones. "Larvae are really a ball of cells with a mouth and a gut. There is only so much they can do. They're not as mobile as fish," she says. Reproducing female crustaceans and fish may be adversely affected, as well.

Levin says that the Pacific's deeper currents keep its waters less oxygenated than those of the Atlantic. "It's what we call 'old water,' since deeper Pacific waters haven't been at the surface in a long time," Levin says. Stramma thinks that some of the Pacific's oxygen problems could also result from El Niño. But climate models predict reductions in dissolved oxygen in all oceans as average global air and sea temperatures rise, and this may be the main driver of what is happening there, she says.

Chan says that lighter warm water creates a cap over the colder depths, making it less likely that deeper waters—where everything from "plankton to whale poop" sucks up oxygen—will rise to mix with the oxygenated surface. Plus, warmer water simply holds less oxygen. According to Chan, most hypoxia-intolerant species engulfed in low-oxygen waters quickly move away. "But for those whose stress response is to hunker down and wait," he adds, "they will die."

Source: http://www.scientificamerican.com/article.cfm?id=low-oxygen-ocean-coastal

About Oceanic Defense We are an international non-profit organization with members in over 60 countries, spanning 6 continents with 1 mission; healthy aquatic ecosystems free from human abuse and neglect. Oceanic Defense teaches people to protect our oceans by acting responsibly as consumers and by making smart decisions in our daily lives. Whether we are buying groceries, commuting to work, planning a vacation or advocating within our own communities; each action we take or decision we make either helps or hurts our oceans. We empower people to be part of the solution rather than part of the problem and work together to protect our blue planet. Join us on Facebook: www.facebook.com/OceanicDefense
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2.26.2010

Seamount Scientists Offer New Comprehensive View Of Deep-Sea Mountains; 'Amazing New Research'

SAN DIEGO, California -- Lying beneath the ocean is spectacular terrain ranging from endless chains of mountains and isolated peaks to fiery volcanoes and black smokers exploding with magma and other minerals from below Earth's surface. This mountainous landscape, some of which surpasses Mt. Everest heights and the marine life it supports, is the spotlight of a special edition of the research journal Oceanography.

These massive underwater mountains, or seamounts, are scattered across every ocean and collectively comprise an area the size of Europe. These deep and dark environments often host a world teeming with bizarre life forms found nowhere else on Earth. More than 99 percent of all seamounts remain unexplored by scientists, yet their inhabitants, such as the long-lived deepwater fish orange roughy, show signs of habitat destruction and over exploitation from intense international fishing efforts.

Scientists from Scripps Institution of Oceanography at UC San Diego and colleagues from the National Oceanic Atmospheric Administration, Oregon State University, University of British Columbia and Woods Hole Oceanographic Institution were among those who contributed their expertise in seamount chemistry, physics, geology, hydrology, oceanography, biology and fisheries conservation to this special interdisciplinary effort to delve into the extremely broad research supported by seamounts and to communicate the science and threats facing them to the public.

"One of the key goals of this special issue was to bring together the extremely diverse seamount research community that ranges from fisheries science and conservation all the way to mantle geochemistry," said Hubert Staudigel a research geologist at Cecil H. and Ida M. Green Institute of Geophysics and Planetary Physics at Scripps and the lead guest editor of the special issue. "In my eyes, this volume of Oceanography goes beyond that by presenting amazing new research in a way that the public can understand and get excited about."

"This issue of Oceanography offers a broad perspective on seamount research of all major disciplines to raise awareness of the diversity of seamount research and to promote collaboration among seamount scientists," wrote the editors of the issue, which represents the most comprehensive volume of peer-reviewed research on the subject to date.

"I was pleased to see how many of the contributions in this special issue deal with very practical and societally important issues of seamounts," said U.S. Geological Survey Director Marcia McNutt.

This Oceanography issue is the result of the work of a National Science Foundation-funded biogeoscience research coordination network organized by Staudigel and the co-editors of the volume. This comprehensive synthesis will establish new collaborations between scientists while at the same time offer a unique educational opportunity for the public to learn about an important feature on Earth that remains vastly unexplored.

The online edition is free and available today and the print edition will be available on March 10.

The special volume was edited by Staudigel; Anthony A.P. Koppers, Oregon State University; J. William Lavelle, National Oceanic and Atmospheric Administration; Tony J. Pitcher, University of British Columbia and Timothy M. Shank, Woods Hole Oceanographic Institution.

Source: http://www.underwatertimes.com/news.php?article_id=04910387251

About Oceanic Defense
We are an international non-profit organization with members in over 60 countries, spanning 6 continents with 1 mission; healthy aquatic ecosystems free from human abuse and neglect. Oceanic Defense teaches people to protect our oceans by acting responsibly as consumers and by making smart decisions in our daily lives. Whether we are buying groceries, commuting to work, planning a vacation or advocating within our own communities; each action we take or decision we make either helps or hurts our oceans. We empower people to be part of the solution rather than part of the problem and work together to protect our blue planet.

Join us on Facebook:
www.facebook.com/OceanicDefense
Visit our official website:
www.oceanicdefense.org
Follow us on Twitter:
www.twitter.com/OceanicDefense

2.24.2010

Plastic rubbish blights Atlantic Ocean

Scientists have discovered an area of the North Atlantic Ocean where plastic debris accumulates.

The region is said to compare with the well-documented "great Pacific garbage patch".

Karen Lavender Law of the Sea Education Association told the BBC that the issue of plastics had been "largely ignored" in the Atlantic.

She announced the findings of a two-decade-long study at the Ocean Sciences Meeting in Portland, US.

The work is the conclusion of the longest and most extensive record of plastic marine debris in any ocean basin.

Scientists and students from the SEA collected plastic and marine debris in fine mesh nets that were towed behind a research vessel.

The nets dragged along were half-in and half-out of the water, picking up debris and small marine organisms from the sea surface.

The researchers carried out 6,100 tows in areas of the Caribbean and the North Atlantic - off the coast of the US. More than half of these expeditions revealed floating pieces of plastic on the water surface.

These were pieces of low-density plastic that are used to make many consumer products, including plastic bags.

Dr Lavender Law said that the pieces of plastic she and her team picked up in the nets were generally very small - up to 1cm across.

"We found a region fairly far north in the Atlantic Ocean where this debris appears to be concentrated and remains over long periods of time," she explained.

"More than 80% of the plastic pieces we collected in the tows were found between 22 and 38 degrees north. So we have a latitude for [where this] rubbish seems to accumulate," she said.

The maximum "plastic density" was 200,000 pieces of debris per square kilometre.

"That's a maximum that is comparable with the Great Pacific Garbage Patch," said Dr Lavender Law.

But she pointed out that there was not yet a clear estimate of the size of the patches in either the Pacific or the Atlantic.

"You can think of it in a similar way [to the Pacific Garbage Patch], but I think the word 'patch' can be misleading. This is widely dispersed and it's small pieces of plastic," she said.

The impacts on the marine environment of the plastics were still unknown, added the researcher.

"But we know that many marine organisms are consuming these plastics and we know this has a bad effect on seabirds in particular," she told BBC News.

Nikolai Maximenko from University of Hawaii, who was not involved in the study, said that it was very important to continue the research to find out the impacts of plastic on the marine ecosystem.

He told BBC News: "We don't know how much is consumed by living organisms; we don't have enough data.

"I think this is a big target for the next decade - a global network to observe plastics in the ocean."

Source: http://news.bbc.co.uk/2/hi/science/nature/8534052.stm

2.23.2010

Corals Partner Up With Heat-Resistant Algae

Corals around the world, already threatened by pollution, destructive fishing practices and other problems, are also widely regarded as among the ecosystems likely to be first — and most — threatened with destruction as earth’s climate warms.

But there is reason to hope, researchers are reporting. The scientists, from Penn State University and elsewhere, have produced new evidence that some algae that live in partnership with corals are resilient to higher ocean temperatures. One species, Symbiodinium trenchi, is particularly abundant – “a generalist organism,” the researchers call it, able to live with a variety of coral hosts.

Corals and algae live together in what scientists call a symbiotic relationship. Coral polyps shelter the algae and as the tiny plants photosynthesize they produce sugars the corals rely on for food. When water warms, though, reefs’ brown or green algae partners die, leaving the reefs white. These so-called bleaching events have become more common as ocean waters warm.

The new research focused on corals in the Andaman Sea, in the northeastern Indian Ocean, but other scientists have made similar algae findings in the Caribbean Sea and the Pacific Ocean.

Heat-resistant algae are not enough to save corals, most researchers agree, but their presence may buy time for some reefs. Other researchers have suggested that unusual periods of warm water may allow heat-resilient algae to proliferate, to the long term benefit of corals.

Unfortunately, though, heat-resilient algae do not necessarily occur in corals everywhere. And it is not clear whether importing the algae to threatened reefs would work to save them. “You never know what the effects might be of introducing an organism into an ecosystem in which it is not well established,” Todd LaJeunesse, one of the Penn State researchers said in a statement reporting the new work.

Also, while the algae findings offer a glimmer of hope, there remain plenty of reasons to worry. Perhaps chief among them is the fact that as ocean waters absorb carbon dioxide they become more acidic, threatening the coral skeletons.

source: http://dotearth.blogs.nytimes.com/2010/02/18/corals-partner-up-with-heat-resistant-algae/

2.22.2010

Japan Plans to Ignore Any Ban on Bluefin Tuna

PARIS — Japan will not join in any agreement to ban international trade in Atlantic bluefin tuna under the United Nations treaty on endangered species, the country’s top fisheries negotiator said.

The negotiator, Masanori Miyahara, said in a telephone interview this week that Japan “would have no choice but to take a reservation” — in effect, to ignore the ban and leave its market open to continued imports — if the bluefin tuna were granted most-endangered species status.

“It’s a pity,” he said, “but it’s a matter of principle.”

Mr. Miyahara, Japan’s top delegate to the United Nations Convention on International Trade in Endangered Species of Wild Fauna and Flora, referred to as Cites, said the convention was the wrong forum for managing the fishing of the bluefin tuna.

A formal proposal for a ban — which requires the approval of two-thirds of its 175 member countries — is scheduled to be presented at a Cites meeting next month in Doha, Qatar.

The position of Japan, which consumes about 80 percent of the bluefin tuna caught in the Mediterranean, “is very simple,” Mr. Miyahara said. He said Japan believed that a different organization, the International Commission for the Conservation of Atlantic Tunas, known as Iccat, should manage bluefin tuna catches and protection.

Mr. Miyahara said Japan acknowledged that the bluefin tuna needed protection, but the endangered-species convention was “quite inflexible,” he said.

Historically, he said, almost no species added to the Cites endangered species list had ever been removed. “We don’t believe the bluefin tuna is endangered to that extent,” he said.

Meanwhile, Europe appeared to be moving to a compromise.

France, home of the largest Mediterranean bluefin fleet, said on Feb. 3 that it was prepared to back an international trade ban at the Cites meeting, to take effect after 18 months. But a person with knowledge of the European Commission’s thinking who asked not to be identified because the commission had not formally adopted the position, said on Friday that officials were planning to propose that Iccat be given a last chance to give depleted stocks of the tuna a chance to recover by temporarily banning all commercial trade in the fish.

Source: http://www.nytimes.com/2010/02/20/business/energy-environment/20tuna.html

Study: Coral Loss Slowed, Reversed By Marine Protected Areas; 'Cumulative Effects Could Be Substantial'

CHAPEL HILL, North Carolina -- A new worldwide study shows marine protected areas (MPAs), underwater parks where fishing and other potentially harmful activities are regulated, provide an added bonus – helping coral reef ecosystems ward off and recover from threats to their health.

Researchers also found the protective effects of MPAs generally strengthen over time.

The findings, published in the Wednesday, Feb. 17, 2010, issue of the journal PLoS One, are the first comprehensive global study to gauge the impact of marine protected areas on the health of corals.

Such havens have proved successful in protecting fish, leading to optimism among researchers that they may also indirectly help corals by restoring reef-based food webs. Previous studies also suggested that such conservation zones can directly protect reefs from problems such as overfishing, anchor damage and sediment and nutrient runoff pollution from adjacent land.

Marine scientists Elizabeth Selig, Ph.D., and John Bruno, Ph.D., from the University of North Carolina at Chapel Hill, analyzed a global database of 8,534 live coral cover surveys conducted between 1969 and 2006. They compared changes in coral cover in 310 marine protected areas to those in nearby unprotected areas, looking at 4,456 reefs in 83 countries. Coral cover, or the percentage of the ocean floor covered by living coral tissue, is a key measure of the health of coral ecosystems.

“We found that, on average, coral cover in protected areas remained constant, but declined on unprotected reefs,” said Selig, the study’s lead author, who completed the work for her doctoral dissertation at UNC. She is now a researcher with Conservation International.

Bruno, associate professor of marine sciences in the UNC College of Arts and Sciences, said the results also suggest the protective benefits of such areas increase with time. Initially, coral cover continued to decrease after protections were put in place. However, several years later, rates of decline slowed and then stopped.

For example, in the Caribbean, coral cover declined for about 14 years after protection began – possibly due to the time it took for fisheries to rebound – but then stopped falling and began to increase. In the Indo-Pacific, cover kept declining for the first five years after protections were established, then began to improve, eventually reaching growth rates of two percent yearly after two decades.

“Given the time it takes to maximize these benefits, it makes sense to establish more marine protected areas. Authorities also need to strengthen efforts to enforce the rules in existing areas,” Bruno said.

From 2004 to 2005, the most recent complete year in the database, coral cover within protected areas increased by 0.05 percent in the Caribbean and 0.08 percent in the Pacific and Indian Oceans. In contrast, coral cover on unprotected reefs declined by an average of 0.27 percent in the Caribbean, and 0.41 percent and 0.43 percent in the Indian and Pacific Oceans, respectively.

The paper noted that the results may even be a conservative estimate of the benefits because regulations aimed at controlling fishing, poaching and other activities in many MPAs in the tropics are poorly enforced. In addition, most areas have only recently been established (almost 60 percent of the surveys in the analysis were from areas less than 15 years old).

“Although the year-to-year changes in coral cover may seem trivial over the short term, the cumulative effects could be substantial over several decades,” Selig said.

However, Selig and Bruno said it remains to be seen whether the observed benefits of MPAs are sufficient to offset coral losses from major disease
outbreaks and bleaching events, both of which are predicted to increase due to climate change. That concern is backed by their finding that widespread warming events like the strong El Niño climatic event of 1998 drastically reduced the positive effects of protective zones. “Marine protected areas are clearly a key tool for coral reef conservation, but we will still have to focus on implementing policies that will reduce climate change,” they said.

The research was supported by funding from UNC, the Environmental Protection Agency and the National Science Foundation.

Source: http://www.underwatertimes.com/news.php?article_id=02410961875

2.21.2010

Marine Census of Bizarre Sea Creatures Near Completion

Newly discovered "Dumbo" (or Grimpoteuthis sp.), one of many new species discoverd and being catalogued by the Census of Marine Life.

From pole to pole, surface to frigid depths, researchers have discovered thousands of new ocean creatures in a decade-long effort now nearing completion, and there may still be several times more strange creatures to be found, leaders of the Census of Marine Life reported Thursday.

SAN DIEGO -- From pole to pole, surface to frigid depths, researchers have discovered thousands of new ocean creatures in a decade-long effort now nearing completion, and there may still be several times more strange creatures to be found, leaders of the Census of Marine Life reported Thursday.

The effort has "given us a much clearer window into marine life," said Shirley Pomponi, executive director of the Harbor Branch Oceanographic Institute at Florida Atlantic University.

Pomponi spoke at the annual meeting of the American Association for the Advancement of Science.

The research, which has involved thousands of scientists from around the world, got under way in 2000 and the final report is scheduled to be released in London on Oct. 4.

Last fall the Census of Marine Life reported having added 5,600 new ocean species to those already known. Ron O'Dor, a professor at Dalhousie University in Halifax, Canada, said there may be another 100,000 or more to be found. "Add microbes and it could be millions," he said.

One benefit of learning more about ocean life is the chance of finding new medical treatments, Pomponi said.

For example, a chemical discovered in deep water sponges is now a component of the cream used to treat herpes infections, Pomponi said. Other research is under way on pain killers and cancer treatments based on ocean life.

Kristina Gjerde, of the International Union for the Conservation of Nature, in Konstancin-Chylice, Poland, said the research will help guide governments in setting up marine protected areas to preserve species both for food and of value for other reasons.

O'Dor said the ocean is large and resilient, so that when a region is protected life there can rebound, "but we can't keep insulting the ocean."

O'Dor noted that many people are concerned about the decline of tigers in the wild, and said the same may be true of great white sharks.

Noting a marine census project that places sonar trackers on fish and marine mammals, O'Dor pointed to an Australian program that senses those trackers and warns people ashore when to close a beach because a shark is nearby.

"See, we can coexist," he said.

Huw Griffiths of the British Antarctic Survey told the gathering that Antarctic sea life is far more than penguins. There are 8,000 species there, most living on the bottom, he said, and they have found novel ways to survive the bitter cold.

But global warming is changing conditions there, with a decline in ice that affect these species and others.

Indeed, O'Dor noted that some squid formerly found only in tropical areas are now migrating to polar regions as climate changes.
Jason Hall-Spencer of the Marine Institute at the University of Plymouth, England, warned that as the ocean absorbs more carbon dioxide from the air it becomes more acid, which can kill some marine creatures, including corals.

Source: http://www.foxnews.com/scitech/2010/02/19/marine-census-grows-near-completion/

2.19.2010

Research: Dolphins' Health Shed Light On Human And Ocean Health; An Important 'Sentinel Species'

(photo by: Jeff Shaw, Oceanic Defense)
WASHINGTON, D.C. -- A panel of governmental, academic and non-profit scientists speaking today at the annual meeting of the American Association for the Advancement of Science (AAAS) unveiled research suggesting that diseases found in dolphins are similar to human diseases and can provide clues into how human health might be affected by exposure to contaminated coastal water or seafood.

“Dolphins and humans are both mammals, and their diet includes much of the same seafood that we consume. Unlike us, however, they are exposed to potential ocean health threats such as toxic algae or poor water quality 24 hours a day,” said Carolyn Sotka of the NOAA Oceans and Human Health Initiative and lead organizer of the session. “Our ecological and physiological similarities make dolphins an important ‘sentinel species’ to not only warn us of health risks, but also provide insight into how our health can benefit from new medical discoveries.”

"Marine animal and ecosystem health are connected to public health and well-being,” said Jane Lubchenco, Ph.D., under secretary of commerce for oceans and atmosphere and NOAA administrator. “NOAA is committed to better understanding these connections and building the partnerships necessary to have healthy oceans, including healthy dolphins.”

NOAA is the principal stewardship agency responsible for protecting dolphins in the wild and supports a network of national and international projects aimed at investigating health concerns. A few of these case studies highlighted today at AAAS illustrate how studying disease processes, or pathologies in dolphins, could lead to future prevention or treatment of some diseases in humans. Equally important is the knowledge gained with regards to overall population health, which can lead to improved management and science-based guidelines to mitigate disease outbreak in both people and animals.

Unprecedented Contaminant Levels in Coastal Dolphins Warn of Potential Health Risks
Researchers from NOAA and its partner institutions recently discovered that bottlenose dolphins inhabiting estuaries along the Georgia coast have the highest levels of polychlorinated biphenyls (PCBs) ever reported in marine wildlife. The term PCB encompasses a suite of persistent contaminants that have been banned in the United States since the late 1970s due to documented adverse health effects. The extraordinarily high levels of PCBs measured in the dolphins, a maximum concentration of 2900 parts per million, may be suppressing their immune function.

The unique signature of the PCB compounds found in these dolphins is consistent with contaminants of concern at a Superfund site near Brunswick, Ga. Scientists are equally concerned about the high PCB levels in dolphins sampled near a marine protected area approximately 30 miles from Brunswick. This suggests that the contaminants are moving along the coast through the marine food web.

“When we received the lab results for the Georgia dolphins, we were alarmed by the contaminant levels and set out to investigate how these heavy chemical burdens were affecting their health,” states Lori Schwacke, Ph.D., with NOAA’s Center for Oceans and Human Health at the Hollings Marine Lab and co-lead investigator on the team.

Last August, the team conducted a dolphin ‘capture-release medical physical’ on this population and found decreased levels of thyroid hormones, elevated liver enzymes and indications of suppressed immune function.

A pilot study is being undertaken by the National Center for Environmental Health, Centers for Disease Control and Prevention (CDC), to examine potential environmental contaminants in residents of nearby coastal communities. The researchers are investigating whether coastal dolphin populations and human communities sharing the same seafood resources experience similar exposures.

Dolphins May Offer Clues to Treating Diabetes in Humans Research conducted in part by the non-profit National Marine Mammal Foundation (NMMF) has uncovered evidence that bottlenose dolphins may be the first natural animal model for type II diabetes. Further study of their genome may elucidate a possible treatment for a disease that accounts for an estimated 5 percent of all human deaths globally, according to the World Health Organization.

These studies have found that healthy dolphins appear to readily turn on and off a diabetes-like state as needed. This “switch” mechanism is likely driven by the dolphins’ very high-protein and very low-carbohydrate fish diet. Analyses have revealed that a fasting mechanism in dolphins may trigger a series of changes in serum chemistries that matches those seen in humans with diabetes.

“While some people may eat a high protein diet to help control diabetes, dolphins appear to have developed a diabetes-like state to support a high protein diet,” according to Stephanie Venn-Watson, Ph.D., director of clinical research for NMMF. “Shared large brains that have high blood glucose demands may explain why two completely different species - humans and dolphins - have developed similar physiological mechanisms to handle sugar.”

Additional evidence collected from this study shows that humans and dolphins may share similar chronic disease outcomes associated with diabetes such as insulin resistance, hemochromatosis (iron overload) and kidney stones.

Model for Epilepsy Discovered from Marine Exposure to Toxic Algae NOAA researchers found that for the first time exposing laboratory animals to a toxin produced by blooms of microscopic ocean algae can induce seizures and eventually lead to epilepsy in almost all of the animals tested. Establishing this novel linkage of oceans and health offers a new perspective to researchers and clinicians studying human epilepsy.

Working with the Marine Mammal Center in Sausalito, Calif., and other partners, scientists initially suspected a marine environmental cause of epilepsy by studying marine mammals and other wildlife with seizures that washed up on California beaches over the past decade.

The seizures were found to be caused by exposure to domoic acid, a neurotoxin produced by the Pseudo-nitzschia australis alga. After realizing thatsome sea lions were stranded with seizures when there were no harmful algal blooms, researchers started to believe that domoic acid poisoning may have progressed to chronic epileptic disease.

Chief of Harmful Algal Blooms & Analytical Response at NOAA's National Centers for Coastal Ocean Science, John Ramsdell, Ph.D., conducted laboratory experiments to validate the field observations seen in sea lions. His research team exposed laboratory rats to domoic acid at levels similar to what a sea lion or dolphin might ingest in the wild by eating contaminated fish.

“Within six months of the initial exposure, 92 percent of laboratory rats tested developed epileptic disease that worsened over their lifetime,” said Ramsdell. “The domoic acid itself is not directly causing the epilepsy, but triggers a brief period of seizures that leads to changes in the brain, resulting in spontaneous and reoccurring seizures, the hallmark of epilepsy.”
The type of epilepsy in the rat model resembles human Temporal Lobe Epilepsy, as confirmed by at least one human case traced back to eating mussels contaminated with the domoic acid toxin.

This research could provide important insight into how dolphins and other species, including humans, respond to domoic acid poisoning. Stranded dolphins with high domoic acid levels do not survive long enough for treatment and study. It is possible that the acute initial poisoning may lead to sudden death; however, these new findings indicate those animals that survive an initial bout of seizures are likely to develop neurological disease with changes in behavior and increasing severity of spontaneous seizures. This new information can help guide future research and emergency response efforts during the next harmful algal bloom event.
Dolphin Viruses May Have Human Health Implications

A team of researchers and veterinarians from the Marine Animal Disease Lab at the University of Florida have discovered at least 50 new viruses in dolphins, the majority of which have yet to be reported in any other marine mammal species.

“We know that the ocean harbors a huge diversity of viruses; but we have very limited knowledge as to which viruses dolphins are susceptible to and how they develop the disease,” said Hendrik H. Nollens, Ph.D., research lead of the UF team. “By studying dolphin viral ecology, we learned more about how viruses infect human and land animals. This research could lead to preventing outbreaks of disease.”

One of these viruses, the human papillomavirus, was found to be common in bottlenose dolphins and likely represents the first natural model of papillomavirus outside the human species. Commonly known as HPV in humans, the virus has historically produced great health risks including cervical tumors or cancer in women, especially women with multiple types of the papillomavirus. This new study shows that while dolphins also host multiple types of papillomaviruses they don’t appear to get cancer, only genital warts. Further research into the genome of this virus in dolphins may help understand, manage and prevent cervical cancer in humans.

Thirteen additional RNA-based viruses that cause intestinal disease and encephalitis in humans have also recently been discovered in dolphins, whales and other marine life. Much like West Nile, Severe Acute Respiratory Syndrome (SARS) and influenza, RNA-based viruses have the ability to quickly adapt, rapidly mutate and jump from animals to people, posing potential threats to public health. Another virus identified in the dolphins had incorporated part of a similar human virus into its DNA make-up, making it a very probable candidate to infect humans.

Source: http://www.underwatertimes.com/news.php?article_id=10564937801

2.18.2010

LEMON SHARKS PROTECTED IN FLORIDA

FOR IMMEDIATE RELEASE:
OCEANIC DEFENSE: LEMON SHARKS PROTECTED
Feb 18, 2010,

We are very pleased to announce that the FWC has protected Lemon sharks from harvest in the state of Florida. We will continue to bring you more news as it becomes available. Please visit us on facebook for updates: http://www.facebook.com/OceanicDefense

The following is directly from the FWC website:

Official release from FWC:

News Release

February 18, 2010
Contact: Lee Schlesinger, 850-487-0554

The Florida Fish and Wildlife Conservation Commission (FWC) approved a rule Thursday to prohibit all recreational and commercial harvest of lemon sharks from Florida waters. The FWC took this action to protect lemon sharks, because they have a high potential to be overharvested.

Lemon sharks are often found near shore in shallow water, especially in Southeast Florida, where they aggregate in large numbers each year. This makes them easy to locate and raises the potential for large numbers of lemon sharks to be removed from the population with minimal effort by fishermen.

Lemon sharks also are susceptible to overharvest because of their life history characteristics. They are slow-growing, reaching sexual maturity at 12-15 years of age, and have a low reproductive potential, producing 6 to 18 pups per litter every second or third year. Juvenile lemon sharks experience a mortality of 40-60 percent.

Recently, some preliminary data from an ongoing tagging study found that at least 7.5 percent of tagged adult lemon sharks from a Southeast Florida aggregation succumbed to fishing mortality in one season. At that rate, the entire lemon shark aggregation could be harvested in a few years.

In addition, recent regulatory actions for other shark species might put more fishing pressure on lemon sharks in Florida waters, where 90 percent of known lemon shark aggregations occur. The harvest of lemon sharks will still be allowed in offshore federal waters adjacent to state waters.

Healthy lemon shark populations are especially important to Florida's dive charter industry which provides ecotourism trips to see lemon shark aggregations in the winter months.

The FWC's lemon shark rule takes effect on March 23. More information about recent shark-management actions is available online at MyFWC.com/Rules, click on "Fishing - Saltwater."

2.16.2010

Sustainable Fisheries Needed for Global Food Security

Fish at a fish market. Seafood is a significant source of protein for nearly 3 billion people and is the planet's most highly traded food commodity, contributing to the livelihoods of more than 560 million people. But a lack of coordinated policy threatens global seafood supplies. (Credit: iStockphoto/Thaddeus Robertson)

ScienceDaily — Increased aid from developed countries, earmarked specifically for sustainable seafood infrastructure in developing countries, could improve global food security, according to a policy paper by an international working group of 20 economists, marine scientists and seafood experts in the Feb. 12 issue of Science.

Seafood is a significant source of protein for nearly 3 billion people and is the planet's most highly traded food commodity, contributing to the livelihoods of more than 560 million people. But a lack of coordinated policy threatens global seafood supplies.

To help safeguard future supply, "the price of seafood has to reflect the cost of maintaining ecosystem health in the countries that capture or farm most of it," says Martin D. Smith, lead author of the paper and associate professor of environmental economics at Duke University's Nicholas School of the Environment. "Many imports are coming from developing countries that are not necessarily well-positioned to manage their resources sustainably."

"In an ideal world, each country governs its own resources well and the seafood trade contributes to worldwide economic growth and food security," Smith says. "But that's not the world we live in right now." Developing countries may produce more seafood than they can consume, exporting it and using the earnings to purchase other foods, goods or services.

In their Science article, Smith and his co-authors examine the complex environmental, political and economic factors that jeopardize global seafood supplies and livelihoods.

"Issues of resource ownership and governance are at the top of the list," says Cathy A. Roheim of the University of Rhode Island. No one owns fish stocks or has sole control over what their catch limits should be, or what type of gear or practices can be used to catch them. This has pushed many stocks beyond maximum sustainable yields, and has led to the current precarious role of fisheries in food security.

Concurrently, "aquaculture (farming seafood) has great promise for enhancing food security but is also threatened when regulations fail to protect the supporting ecosystems," says Smith.

Smith, Roheim and their colleagues weigh the pros and cons of three policy options to sustain seafood production.

Trade policies such as import bans and tariffs could be used to punish countries that fail to meet sustainability standards, "but these are rather blunt instruments," Smith says. "In the short run, you may end up hurting people who are the most vulnerable."

Private incentives, such as ecolabeling, that raise the price of seafood to help pay for sustainable practices, are another option. But it's not clear from existing studies if enough consumers will voluntarily pay more for seafood. And raising the price of high-valued products such as shrimp or tuna, which are mostly exported to developed countries, could backfire. Consumers might then seek out less expensive alternatives that people in poor, developing countries depend on. This may raise prices of low-valued products and put products with high nutritional value out of reach of the poorest of the poor.

A third option -- allocating more foreign aid for sustainable infrastructure in developing countries -- provides clear advantages, Smith believes. By specifically earmarking aid for things like sustainable fishing gear, improved management, sustainable aquaculture facilities, or systems to verify sustainability compliance, developed countries will foster food security and ecosystem health, and strengthen seafood trade, without causing short-term hardships to consumers or producers.

"We're not suggesting that foreign aid for sustainability should replace other aid that contributes to food security," Smith notes. "We're just saying this is an option that is often overlooked."

The Duke-led working group is funded by the National Center for Ecological Analysis and Synthesis. Larry Crowder, director of the Nicholas School's Center for Marine Conservation, and Mary Turnipseed, a PhD student at the school, co-founded and co-direct the group with Smith.

Other members come from National Center for Ecological Analysis and Synthesis; University of Rhode Island, University of California-Santa Barbara; University of Stavanger, Norway; Hawaii Institute of Marine Biology; University of Georgia; University of Arizona; Stanford University; World Wildlife Fund; Southwest Fisheries Science Center; Memorial University and Dalhousie University, Canada; Norwegian University of Life Sciences; Whole Foods Market; and Comunidad y Biodiversidad A.C., Mexico.

Source: http://www.sciencedaily.com/releases/2010/02/100211141134.htm

2.15.2010

Oceans Reveal Further Impacts of Climate Change

ScienceDaily — The increasing acidity of the world's oceans -- and that acidity's growing threat to marine species -- are definitive proof that the atmospheric carbon dioxide that is causing climate change is also negatively affecting the marine environment, says Antarctic marine biologist Jim McClintock, Ph.D., professor in the University of Alabama at Birmingham (UAB) Department of Biology.

"The oceans are a sink for the carbon dioxide that is released into the atmosphere," says McClintock, who has spent more than two decades researching the marine species off the coast of Antarctica. Carbon dioxide is absorbed by oceans, and through a chemical process hydrogen ions are released to make seawater more acidic.

"Existing data points to consistently increasing oceanic acidity, and that is a direct result of increasing carbon dioxide levels in the atmosphere; it is incontrovertible," McClintock says. "The ramifications for many of the organisms that call the water home are profound."

A substance's level of acidity is measured by its pH value; the lower the pH value, the more acidic is the substance. McClintock says data collected since the pre-industrial age indicates the mean surface pH of the oceans has declined from 8.2 to 8.1 units with another 0.4 unit decline possible by century's end. A single whole pH unit drop would make ocean waters 10 times more acidic, which could rob many marine organisms of their ability to produce protective shells -- and tip the balance of marine food chains.

"There is no existing data that I am aware of that can be used to debate the trend of increasing ocean acidification," he says.

McClintock and three co-authors collected and reviewed the most recent data on ocean acidification at high latitudes for an article in the December 2009 issue of Oceanography magazine, a special issue that focuses on ocean acidification worldwide. McClintock also recently published research that revealed barnacles grown under acidified seawater conditions produce weaker adult shells.

Antarctica as the Ground Zero for Climate Change

McClintock says the delicate balance of life in the waters that surround the frozen continent of Antarctica is especially susceptible to the effects of acidification. The impact on the marine life in that region will serve as a bellwether for global climate-change effects, he says.

"The Southern Ocean is a major global sink for carbon dioxide. Moreover, there are a number of unique factors that threaten to reduce the availability of abundant minerals dissolved in polar seawater that are used by marine invertebrates to make their protective shells," McClintock says.

"In addition, the increased acidity of the seawater itself can literally begin to eat away at the outer surfaces of shells of existing clams, snails and other calcified organisms, which could cause species to die outright or become vulnerable to new predators."

One study McClintock recently conducted with a team of UAB researchers revealed that the shells of post-mortem Antarctic marine invertebrates evidenced erosion and significant loss of mass within only five weeks under simulated acidic conditions.

McClintock says acidification also could exert a toll on the world's fisheries, including mollusks and crustaceans. He adds that the potential loss of such marine populations could greatly alter the oceans' long-standing food chains and produce negative ripple effects on human industries or food supplies over time.

"So many fundamental biological processes can be influenced by ocean acidification, and the change in the oceans' makeup in regions such as Antarctica are projected to occur over a time period measured in decades," McClintock says.

"Evolution simply may be unable to keep up, because it typically takes marine organisms longer periods, hundreds or even thousands of years to naturally adapt," he says. "But ocean acidification is simply happening too quickly for many species to survive unless we reverse the trend of increasing anthropogenically generated carbon dioxide that is in large part driving climate change."

Source: http://www.sciencedaily.com/releases/2010/02/100204144811.htm

2.11.2010

Climate 'Tipping Points' May Arrive Without Warning, Says Top Forecaster

ScienceDaily — A new University of California, Davis, study by a top ecological forecaster says it is harder than experts thought to predict when sudden shifts in Earth's natural systems will occur -- a worrisome finding for scientists trying to identify the tipping points that could push climate change into an irreparable global disaster.

Many scientists are looking for the warning signs that herald sudden changes in natural systems, in hopes of forestalling those changes, or improving our preparations for them," said UC Davis theoretical ecologist Alan Hastings. "Our new study found, unfortunately, that regime shifts with potentially large consequences can happen without warning — systems can ‘tip’ precipitously.

"This means that some effects of global climate change on ecosystems can be seen only once the effects are dramatic. By that point returning the system to a desirable state will be difficult, if not impossible."

The current study focuses on models from ecology, but its findings may be applicable to other complex systems, especially ones involving human dynamics such as harvesting of fish stocks or financial markets.

Hastings, a professor in the UC Davis Department of Environmental Science and Policy, is one of the world's top experts in using mathematical models (sets of equations) to understand natural systems. His current studies range from researching the dynamics of salmon and cod populations to modeling plant and animal species' response to global climate change.

In 2006, Hastings received the Robert H. MacArthur Award, the highest honor given by the Ecological Society of America.

Hastings' collaborator and co-author on the new study, Derin Wysham, was previously a postdoctoral scholar at UC Davis and is now a research scientist in the Department of Computational and Systems Biology at the John Innes Center in Norwich, England.

Scientists widely agree that global climate change is already causing major environmental effects, such as changes in the frequency and intensity of precipitation, droughts, heat waves and wildfires; rising sea level; water shortages in arid regions; new and larger pest outbreaks afflicting crops and forests; and expanding ranges for tropical pathogens that cause human illness.

And they fear that worse is in store. As U.S. presidential science adviser John Holdren (not an author of the new UC Davis study) recently told a congressional committee: "Climate scientists worry about 'tipping points' ... thresholds beyond which a small additional increase in average temperature or some associated climate variable results in major changes to the affected system."

Among the tipping points Holdren listed were: the complete disappearance of Arctic sea ice in summer, leading to drastic changes in ocean circulation and climate patterns across the whole Northern Hemisphere; acceleration of ice loss from the Greenland and Antarctic ice sheets, driving rates of sea-level increase to 6 feet or more per century; and ocean acidification from carbon dioxide absorption, causing massive disruption in ocean food webs.

The new UC Davis study was supported by the Advancing Theory in Biology program at the U.S. National Science Foundation.

Source: http://www.sciencedaily.com/releases/2010/02/100209191445.htm

2.05.2010

Commercial Fishing Endangers Dolphin Populations, New Study Finds

ScienceDaily — Extensive commercial fishing endangers dolphin populations in the Mediterranean. This has been shown in a new study carried out at the University of Haifa's Department of Maritime Civilizations. "Unfortunately, we turn our backs to the sea and do not give much consideration to our marine neighbors," states researcher Dr. Aviad Scheinin.

The study, which was supervised by Prof. Ehud Spanier and Dr. Dan Kerem, examined the competition between the two top predators along the Mediterranean coast of Israel: the Common Bottlenose Dolphin (Tursiops truncatus) and bottom trawlers. (Trawling is the principal type of commercial fishing in Israel and involves dragging a large fishing net through the water, close to the sea floor, from the back of a boat.) These two predators off the coast of Israel trap similar types of fish near the sea floor, so the researchers decided to examine the nature of the competition between the two.

Commercial trawling in the Mediterranean off the coast of Israel targets codfish, red mullet and sole, three commercial and sought-after types of fish. The Department of Fisheries in Israel's Ministry of Agriculture has data showing that over the years the amount of fish from the sea floor looted by Israel's commercial trawling is larger than the amount of fish that nature provides, indicating that the sea floor fish population dropped between the years 1949 and 2006.

Would this decline in fish supply necessarily cause direct harm to the dolphins, seeing as their diet might also include other types of fish? In order to verify this, the researcher examined the contents of the stomachs of 26 dolphins that died and landed on the beach, or that had been caught by mistake. He also examined the behavior of living dolphins by carrying out 232 marine surveys over more than 3,000 km. along the central coast of Israel. The dolphins' stomachs contained mainly non-commercialized fish, suggesting that they perhaps do not compete directly with the commercial trawlers, and that the commercial fishing does not directly affect the dolphins' nutrition.

The living dolphins' behavior, on the other hand, draws an entirely different picture. According to Dr. Scheinin, most of the dolphins were observed around the trawling boats: the chances of observing a school of dolphins near a trawler is ten times higher than in the open sea. This is because the trawler serves as a "feeding station" for the dolphins: there they are not able to feed from the more expensive loot caught in the nets, but they are able to enjoy schools of other types of fish that swim around the trawler. "The problem is that this type of fishing endangers the dolphins. Eight dolphins die each year off the coast of Israel on average, and of those, four die after having been mistakenly caught in trawling nets. Seeing as many studies have proven the high intelligence of the dolphin, it is clear that these sea mammals are aware of this danger, but are left with little choice due to their need to search for food around the trawlers due to the scarcity of other food sources," Dr. Scheinin explains.

This conclusion is reinforced by the suckling female dolphins. These dolphins require larger quantities of food than usual, and despite the risk for the younger and much less experienced dolphins that swim by their side, all of the suckling dolphins have been observed significantly more frequently around the trawlers. This indicates that they could not obtain enough food in other places.

The dolphins off the coast of Israel spend most of their time in search of food while their mates in other areas in the world are far busier with social activities. This fact is yet another contributing factor to the assumption that they suffer a deficiency in food resources.

The present study illustrates, for the first time, the characteristics of the dolphins inhabiting the sea region off the Mediterranean coast of Israel. This dolphin population is stable and at any given time can be counted at about 350 dolphins. Of these, the researchers are personally familiar with 150 dolphins -- on a first name basis -- which can be identified by the dorsal fin, the dolphin's fingerprint. Forty of these are seen repeatedly and are permanent inhabitants of opposite the coast of Israel. "There is a stable dolphin population off the shores of Israel, and any resolution concerning the sea must also consider the dolphins. So as to preserve this population we must declare extensive marine nature reserves, so as to regulate fishing and bring an end to sea pollution. Regrettably, we are not considerate enough of the dolphins," concludes Dr. Scheinin.

Source: http://www.sciencedaily.com/releases/2010/02/100204101813.htm

2.04.2010

No-kill researchers sail to study Antarctic whales

WELLINGTON, New Zealand – Researchers set sail from New Zealand on Tuesday to study whales off Antarctica without killing them — an open challenge to Japan's killing of up to 1,000 whales a year in the name of science.

Japan has a six-boat whaling fleet in Antarctic waters as part of its scientific whaling program, an allowed exception to the International Whaling Commission's 1986 ban on commercial whaling. Opponents claim Japan's program is commercial whaling in disguise, with the whale meat sold for food in Japan.

Some 18 scientists from Australia, France and New Zealand are taking part in the initial six-week voyage from the New Zealand capital, Wellington, to research whales, their food and their interaction with the environment.

Andrew Leachman, captain of the research vessel Tangaroa, told AP on Tuesday he expects to take about seven and a half days to reach the edge of the Antarctic pack ice near Cape Colbeck on the Ross Sea, where the team will begin tracking whales in temperatures of about minus 2 degrees Celsius (28 degrees Fahrenheit).

Australian Conservation Minister Peter Garrett said the research project, named the Southern Ocean Research Partnership, seeks to reform the management of science within the International Whaling Commission, end scientific whaling and develop internationally agreed, cooperative whale conservation management plans.

"It is the largest of its kind in the world that places a premium on scientific knowledge and says that we don't have to kill whales to learn about them," Garrett said.

The techniques they use will include biopsy sampling using retrievable darts, photography, satellite tag tracking, whale feces recovery and acoustic surveys.

"We remain absolutely and completely opposed to killing whales in the name of science," Garrett told reporters as he extended an invitation to Japan and others to participate in the research.
Despite protests by anti-whaling groups like the Sea Shepherd Conservation Society, the number of whales targeted by the Japanese in their program has more than doubled, Garrett said.

He said the research program is not intended to collect evidence for possible legal action to try to halt Japan's annual whale kill. Australia sent a government vessel to watch Japan's whale fleet during the 2007-08 season and collect evidence for a possible lawsuit in an international court, but the threat of legal action is yet to be followed up.

Japan's Institute of Cetacean Research has no intention at this stage of taking part in the non-lethal research program, said Glenn Inwood, the New Zealand-based spokesman for the institute.

"If you want to hunt whales ... to eat them, then you are going to need data that can only be obtained through lethal research," he told The Associated Press.

Non-lethal whale research can't provide age-related data or accurate data on individual whale birthing rates, he said.

Preliminary results of the expedition will be presented at the IWC annual meeting in Morocco in June. Inwood said Japan would respond to the research once it was published.

The nations supporting the non-lethal research program are: Argentina, Australia, Brazil, Chile, Costa Rica, France, Italy, Mexico, New Zealand, South Africa, Uruguay and the United States.

Source: http://news.yahoo.com/s/ap/20100202/ap_on_re_as/as_antarctica_whaling;_ylt=AuKaotjrtN1kkE2dgCDT3tXgtY54

France backs bluefin tuna ban but after delay

France, Italy and Spain account for half of the world's total allowable catch of bluefin tuna.
PARIS (Reuters) - France said on Wednesday it would support a ban on global trade in bluefin tuna, but after an 18-month delay, bowing to pressure from the fishing lobby to hold off an immediate decision on the giant fish.

Environmentalists such as Greenpeace called the delay "absurd" and said it could lead to the extinction of the fish that is prized by sushi lovers.

"Asking for 18 months to implement this measure equates to waiting until there is no more bluefin tuna before acting," Greenpeace said in a statement. "The government is buying peace with the fishermen at a time of regional elections."

Monaco has proposed protecting bluefin tuna, which can fetch up to $100,000 in Japan, by listing it under appendix I of the Convention on International Trade in Endangered Species (CITES).

France did not expect a ban to come into effect before September 2011, Environment Minister Jean-Louis Borloo said on Wednesday, adding the CITES committee needed the results of a scientific study on stocks before taking a decision in July 2011.

"There is still powerful international lobbying from a big country, which has allies," he said, referring to Japan, where 80 percent of the catch is exported.

The European Union failed to make progress on bluefin tuna last year, with Greek Environment Commissioner Stavros Dimas and Maltese Fisheries Commissioner Joe Borg deadlocked over how far the EU should go to protect the fish.

EU diplomats expect to see faster progress this year under newly nominated Greek Fisheries Commissioner Maria Damanaki.

French Agriculture Minister Bruno Le Maire said on Wednesday that France would call on the European Commission to compensate fishermen for lost revenues should the ban be imposed.

Fishermen's representatives called the French position "incoherent" ahead of the regional elections in March.

"The government is really in a messy position," said Francois Wendling, head of a fishermen's trade association in Sete in southern France.

"If waiting for scientific studies is so important, why is the government giving a position now? This is purely political."

President Nicolas Sarkozy said last year he favoured a clear trade ban on bluefin tuna.

Asked if the government would stand by its position if fishermen decided to block ports as they did in Marseille last April, Le Maire said:

"French fishermen are reasonable people. But what makes them angry is when rules do not apply to everyone. France will ask for reinforced sanctions against countries which do not respect them (bluefin tuna fishing quotas)."

There are about 200 tuna boats in France, but only 28 are so-called "purse-seiners," 40-meter long high-tech boats which account for 90 percent of all French catch. Traditional fishing for domestic markets will remain possible, Le Maire said.

Source: http://www.reuters.com/article/idUSTRE6121Z620100203

2.03.2010

Baby gray whale 'putting on quite a show' off Malibu Pier

Sightseers are gathering on the Malibu Pier and TV helicopters are hovering overhead to catch a glimpse of a baby gray whale that's been swimming just off the coast for the last 24 hours.

The 20- to 30-foot-long whale showed up around 10 a.m. Tuesday, moving close to shore and within several feet of the beach near the Beachcomber restaurant. Although whales frequently travel through Malibu, they rarely make extended stopovers, said Joann Waugh, assistant manager at Malibu Outfitters on the pier.

"For Malibu pier specifically, it's a rare thing to see," Waugh said.

Onlookers say the baby gray has been playful, swimming under the pier and popping its head out of the water vertically and then sinking back down, a move called spyhopping.

"He's putting on quite a show, with all the helicopters flying around him," Waugh said.

She said mother whales may travel closer to shore so their babies do not have to hold their breath as long in the shallower waters. But the mother was nowhere to be seen, onlookers said.

-- Amina Khan

Source: http://latimesblogs.latimes.com/lanow/2010/02/baby-gray-whale-putting-on-quite-a-show-off-malibu-pier.html

New ‘underwater plane’ to explore ocean depths

Virgin Limited's Necker Nymph will take wealthy riders on dives lasting up to two hours; the "hydrobatic" vehicle can perform dolphin-like flips underater.

A new "underwater plane" will plunge wealthy riders down into the ocean depths for a hefty fee.

U.K. company Virgin Limited Edition recently announced the Necker Nymph, a three-person "aero-submarine" that can dive to depths of 36,000 feet – which is deeper than Mount Everest is tall.

The Necker Nymph vehicle is designed and built by San Francisco-based Hawkes Ocean Technologies and is based on the company's DeepFlight series of submersibles.

Virgin bills the Necker Nymph as a "a new class of high-performance, positively buoyant vehicles which safely extend the overall capabilities of scuba, while offering the unique experience of underwater flight."

Unlike conventional subs, which use ballast to sink in the water, the Necker Nymph uses "uses downward 'lift' on the wings to fly down to depth," Virgin explained in a statement.

Each dive can last up to two hours, during which time the "hydrobatic" Necker Nymph can perform dolphin-like flips underwater. An open cockpit provides a near 360-degree viewing experience.

Virgin says the Necker Nymph has "near-zero" environmental impact: "Its positive buoyancy prevents the sub from landing on a reef, and its low light and noise emissions ensure the fragile ocean ecosystems remain undisturbed."

But unless you're incredibly wealthy, don't expect to experience a ride aboard the Necker Nymph anytime soon. The craft is only available if you rent Necker Belle, Virgin's 105-foot (32-meter) luxury catarmaran. The boat's weekly charter rate is U.S. $88,000. Rent the Necker Nymph will cost an additional U.S. $25,000 per week.

Virgin and its founder Sir Richard Branson have a reputation for building extreme vehicles. Virgin Galactic recently unveiled a space plane, called SpaceShipTwo, that will ferry tourists to suborbital space.

Source: http://www.msnbc.msn.com/id/35203984/ns/technology_and_science-innovation/

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