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News articles on Oceans

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Mongabay.com news articles on oceans in blog format. Updated regularly.

Global warming to worsen ocean dead zones, hurt fisheries
(5/1/2008) Warming oceans will worsen oxygen-deficient or hypoxic dead zones, affecting ecosystems and fisheries, warn researchers writing in the journal Science.


Photos - researchers study largest squid ever captured
(4/29/2008) Marine biologists in New Zealand are thawing the corpse of the largest squid ever caught in order to learn more about one of the ocean's most mysterious creatures.


The Arctic's most threatened marine mammals due to climate change
(4/25/2008) A recent study has measured the sensitivity to Arctic marine mammals to climate change. The study found that the three species most vulnerable to climate change are the hooded seal, the polar bear, and the narwhal: the common thread between these species being the loss of sea ice.


Fatal San Diego Shark Attack a Rare Event
(4/25/2008) Friday morning a 66-year-old swimmer was attacked and killed by a shark off Solana Beach in San Diego county. It was the first fatal shark attack in San Diego since 1994.


Shark-repelling fishing gear in the works
(4/23/2008) Fishing gear that produces an electric field in sea water could help prevent sharks from becoming accidental bycatch, say scientists at NOAA.


Ocean dead zones have nearly quadrupled since 1994
(4/3/2008) Coastal areas worldwide are suffering from over-enrichment of their waters by nitrogen and phosphorus, finds a new study from the World Resources Institute (WRI). This over-enrichment, known as eutrophication, causes numerous environmental problems, eventually devastating coastal environments. In overly nutrient-rich waters phytoplankton, micro- and macroalgae grow to excessive portions; these 'algal blooms' diminish subaquatic vegetation, damage coral reefs, and deplete populations of fish, shellfish, marine mammals, and sea birds. In the worst case scenarios the massive algal blooms form hypoxic or dead zones due to loss of oxygen in the water, essentially condemning the ecosystem.


Microbes could be the key to coral death
(4/2/2008) Coral reefs could be dying out because of changes to the microbes that live in them just as much as from the direct rise in temperature caused by global warming, according to scientists speaking today at the Society for General Microbiology's 162nd meeting being held this week at the Edinburgh International Conference Centre.


Squid beaks may revolutionize engineering
(3/27/2008) When scientists dissect the stomachs of sperm whales, they find the super-hard beaks of squids, the only part of them that is indigestible. Scientists can tell the diet of a whale by the variety of beaks left behind, sometimes numbering in the thousands. But how does a squid, whose body is soft and supple, have a beak that is considered one of the hardest organic materials in natures? Scientists have long pondered this question.


Giant sea creatures discovered in Antarctica
(3/21/2008) An eight week long survey of New Zealand's Antarctic waters has turned up giant creatures including jellyfish with 12-foot tentacles and 2-foot-wide starfish, as well as up to eight previously undiscovered species of mollusc, reports the Associated Press (A.P.).


Perennial ice disappearing in the Arctic receives little attention from the media
(3/19/2008) A big story came out on the loss of perennial ice in Arctic from NASA on Wednesday — and was mostly ignored by the media. Despite a colder winter than usual, the Arctic is losing its perennial ice (ice that lasts longer than a season) making the region even more susceptible to global warming. Perennial ice used to cover 50-60 percent of the Arctic. Results from this year's satellites show that perennial ice has decreased to less than 30 percent. In addition ice older than six years has declined from 20 percent in the eighties to six percent today.


Fast-growing coral may help reefs survive global warming
(3/13/2008) Two fast-growing coral species may hold the key to Caribbean reefs surviving global warming, report researchers writing in the journal Science.


Dams mask sea level rise
(3/13/2008) Water held in man-made reservoirs is masking the true extent of sea level rise from melting ice and thermal expansion, report scientists writing in the journal Science. The researchers, from the National Central University in Taiwan, calculate that sea levels would be 30 mm (1.2 inches) higher without water stored behind dams.


Corn ethanol is worsening the Gulf dead zone
(3/10/2008) Proposed legislation that will expand corn-ethanol production in the United States will worsen the growing "dead zone" in the Gulf of Mexico and hurt marine fisheries, report researchers writing in the Proceedings of the National Academy of Sciences (PNAS).


Humans are appropriating 20% more resources than Earth can provide
(3/10/2008) Mankind is appropriating 20 percent more resources each year than Earth can produce, according to a report from environmental group WWF.


Cretaceous sea levels were 550 feet higher than today
(3/6/2008) Sea levels were 550 feet (170 m) higher in the late Cretaceous period, about 80 million years ago, than today, shows a new reconstruction of historic ocean basins published in the journal Science. The authors say the work may help model current global warming-driven sea level change.


New 'red list' seeks to stave off global seafood collapse
(3/3/2008) Over-fishing and destructive fishing practices have had a considerable effect on oceanic ecosystems. In 2006 a highly-reported study found that without drastic measures all wild seafood will disappear from the oceans in 50 years. Greenpeace, working against such a crash, has started a campaign that highlights 'red fish'. The twenty-two 'red' species are seafood that consumers and suppliers (including supermarkets) should avoid due to their plummeting populations and/or the damage caused by harvesting them.


Expedition finds inverted pyramid where sharks dominate marine ecology
(2/25/2008) A survey of a remote Pacific archipelago turned up pristine coral reefs that could offer a "baseline" for measuring the human impact on reefs worldwide, report researchers from the Scripps Institution of Oceanography (SIO) at the University of California at San Diego.


Deep-sea krill discovered in Antarctica
(2/25/2008) Antarctic krill have been found living at depths up to 3000 meters near the Antarctic Peninsula, a finding that changes scientists' understanding of a fundamental part of the ocean food chain. Previously researchers believed that krill lived only in the upper ocean.


Rainforest logging threatens endangered sea turtles
(2/25/2008) Logging is having an unexpected impact on endangered sea turtles in Central Africa, reports a new study published in Oryx. Aerial surveys in Gabon reveal that logs lost during transport are clogging beaches, preventing critically endangered leatherback turtles (Dermochelys coriacea) from nesting.


Amazon rainfall linked to Atlantic Ocean temperature
(2/25/2008) Climate models increasingly forecast a dire future for the Amazon rainforest. These projections are partly based on recent research that has linked drought in the Amazon to sea surface temperatures in the tropical Atlantic. As the tropical Atlantic warms, the southern Amazon -- the agricultural heartland of Brazil -- may see higher temperatures and less rainfall.


Widespread butterflyfish may go extinct due to global warming, pollution
(2/24/2008) The Chevroned Butterflyfish, a colorful fish found in tropical oceans around the world, faces extinction due to overexploitation, pollution and climate change, report researchers writing in the journal Behavioural Ecology and Sociobiology. Despite its widespread distribution, the species could be doomed by its specialized feeding habitats: the Chevroned Butterflyfish (Chaetodon trifascialis) feeds on only one type of coral.


Large-scale Amazon deforestation or drying would have dire global consequences
(2/21/2008) A new study shows that large-scale degradation of the Amazon, either through drying or continued deforestation, would have global consequence, including worsening climate change, causing regional vegetation shifts, and increasing dust in the atmosphere.


Global warming - not el Nino - drove severe Amazon drought in 2005
(2/20/2008) One of the worst droughts on record in the Amazon was caused by high temperatures in the Atlantic rather than el Nino. The research, published in Philosophical Transactions of the Royal Society B, suggests that human-driven warming is already affecting the climate of Earth's largest rainforest.


Planktos kills iron fertilization project due to environmental opposition
(2/19/2008) Planktos, a California-based firm that planned a controversial iron-fertilization scheme in an attempt to qualify carbon offsets, announced that it failed to find sufficient funding for its efforts and would postpone its project indefinitely.


Photos of bizarre creatures discovered in Antarctica
(2/19/2008) Researchers aboard the Aurora Australis, an Australian vessel, have discovered a trove of strange creatures on the sea floor near East Antarctica.


Tuna may go the way of cod: a collapsed fishery
(2/18/2008) The collapse of the cod fishery could provide important lessons to prevent a similar fate for some tuna populations, say researchers presenting at the American Association for the Advancement of Science (AAAS) Annual Meeting in Boston on February 18.


Mysteries of the Great White Shark unveiled
(2/17/2008) The Great White Shark has always been a creature of mystery. The world's largest shark has long fascinated humanity from the novel and film Jaws to recent sumptuous footage of the sharks catching sea lions in Planet Earth. The behemoth, who at times can reach seven meters in length, has also become famous for occasionally attacking swimmers and surfers, though scientists believe the sharks do not intentionally hunt humans. However, the great predator's behavior and lifecycle remains mostly mysterious to science. Some of these mysteries are just now being unraveled thanks to the Tagging of Pacific Predators (TOPP) program.


How will global warming affect marine food chains?
(2/17/2008) Rising temperatures and acidity of the world's oceans due to human emissions of carbon dioxide is putting marine food webs at risk warned a researcher speaking at a press briefing at the annual meeting of the American Association for the Advancement of Science in Boston.


Why are oceans at risk from global warming?
(2/17/2008) Climate change is putting the world's oceans at risk by increasing the temperature and acidity of seawater, and altering atmospheric and oceanic circulation, warned a panel of scientists this week at the American Association for the Advancement of Science (AAAS) annual meeting in Boston.


Digital maps and mathematical analysis could reduce fishing bycatch
(2/16/2008) Images of dolphins and turtles ensnared in tuna nets are a heart-wrenching reminder of the impact of fisheries on ocean bio-diversity. Known in fisheries science as ‘by-catch,’ this killing of non-target species is a complex problem that has resisted easy answers.


Ocean trawling impacts can be seen from space
(2/16/2008) Bottom trawling, an industrial fishing method that drags large, heavy nets across the seafloor stirs up huge, billowing plumes of sediment on shallow seafloors that can be seen from space.


Warming could bring sharks to Antarctica with devastating ecological consequences
(2/15/2008) Global warming could make the waters around Antarctica hospitable to sharks for the first time in 40 million years. Their return could have devastating ecological consequences report researchers from the University of Rhode Island.


Only 4% of the ocean is pristine according to first oceanic map of human-impact
(2/14/2008) There is a much used adage regarding the ocean that goes something like this: we know more about our solar system than our ocean. Whether or not one believes this to be true (less than 5% of the ocean has been explored), a group of over twenty researchers, by agglomerating the available information on the oceans, have created a large-scale image of the ocean's health.


World's largest marine protected area established in the South Pacific
(2/14/2008) Kiribati, a small island nation in the South Pacific, has established the world's largest marine protected area.


Fatal shark attacks hit a 20-year low in 2007
(2/13/2008) Human deaths from shark attacks hit a 20-year low in 2007 according to statistics released by the University of Florida.


Global warming puts penguins at risk of extinction
(2/11/2008) Climate change could put the long-term survival of sub-Antarctic King Penguins at risk by reducing the availability of prey, reports a new study published in Proceedings of the National Academy of Sciences.


Sea turtle makes record migration - 12,774 miles
(2/7/2008) Satellite-tagging has revealed that a leatherback sea turtle (Dermochelys coriacea) swam a total distance of 20,558 kilometers (12,774 miles) over 647 days from Jamursba-Medi, Indonesia to the coast of Oregon. The results are published in The State of the World's Sea Turtles magazine, a publication launched by Conservation International and the IUCN Marine Turtle Specialist Group.


Natural ocean thermostat may protect some coral reefs
(2/7/2008) Natural processes may prevent oceans from warming beyond a certain point, helping protect some coral reefs from the impacts of climate change, new research finds. The study provides evidence that an ocean "thermostat" may be helping regulate sea-surface temperatures in a biologically diverse region of the western Pacific.


Is California fish catch linked to wind patterns?
(2/6/2008) Are fluctuations in fish catch off the coast of California linked to wind patterns? A new study by scientists at Scripps Institution of Oceanography at UC San Diego suggests yes


Sunscreen damages coral reefs
(1/31/2008) Sunscreen can damage reefs by worsening viral infections in symbiotic algae that provide corals with sustenance, reports Nature News


Groups call for doubling of reef protection for International Year of the Reef
(1/25/2008) Thursday 17 countries and 30 organization launched the International Year of the Reef, a campaign to protect coral reefs increasingly threatened by climate change, pollution, and unsustainable activities.


Global warming will diminish fish catch in the Bering sea
(1/16/2008) One half of the fish caught in the U.S. annually--and almost a third worldwide--come from the Bering Sea. Yet, this vast resource is increasingly threatened by climate change. A recent study, published in Marine Ecology Progress Series, showed that global warming will greatly affect the Bering Sea's phytoplankton, the cornerstone of the sea's rich ecosystem.


Starfish invasion threatens world's richest coral reefs
(1/14/2008) Outbreaks of the notorious crown of thorns starfish now threaten the "coral triangle," the richest center of coral reef biodiversity on Earth, according to recent surveys by the Bronx Zoo-based Wildlife Conservation Society and ARC Centre of Excellence for Coral Reef Studies.


Despite Arctic crocodiles, glaciers existed during extreme global warming 90M years ago
(1/10/2008) Massive glaciers extended across 50-60 percent of Antarctica some 91.2 million years even as crocodiles roamed the Arctic and surface temperatures of the western tropical Atlantic Ocean climbed to 37 degrees Celsius (98 degrees Fahrenheit), reports a study published in the journal Science.


Too early to say if iron seeding will slow global warming - scientists
(1/10/2008) Schemes to use feed the ocean with iron as a way to enhance carbon sequestration from the atmosphere are premature and could be damaging to sea life and marine ecosystems, warns a letter published in the journal Science by an international group of scientists.


Stanford University, Monterey Bay Aquarium launch center to save oceans
(1/9/2008) Stanford University, the Monterey Bay Aquarium and the Monterey Bay Aquarium Research Institute (MBARI) have teamed up to establish the Center for Ocean Solutions, a new collaboration that will bring together international experts in marine science and policy to find innovative ways to protect and restore the world's oceans.


North Atlantic warming is natural, not due to climate change
(1/3/2008) While overall temperature in the North Atlantic Ocean has risen over the past fifty years, it has not been consistent across all areas with subpolar regions cooling as subtropical and tropical waters warmed, reports a new study published in the journal Science.


Rising CO2 levels tied to increasing human mortality
(1/3/2008) Rising carbon dioxide levels have been tied to increases in human mortality, reports a study to be published in Geophysical Research Letters.


Demise of deep-sea species could lead to collapse of ocean ecosystems
(12/27/2007) Declining populations of deep-sea species pose a significant threat to the health of world oceans, warns a study published in the January 8th issue of Current Biology.


Study shows that sea turtles can recover
(12/18/2007) Conservation of sea turtle nesting sites is paying off for the endangered reptiles, reports a new study published this week in the journal Global Ecology and Biogeography. A team of researchers led researchers from IUCN and Conservation International found that green turtle (Chelonia mydas) nesting on four beaches in the Pacific and two beaches in the Atlantic have increased by an four to fourteen percent annually over the past two to three decades as a result of beach protection efforts.



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