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Antarctic ice sheet loses area the size of London from base, say scientists

A region of ice the size of Greater London vanished from the edge of  Antarctica  between 2010 and 2016, a new British-led study has shown. The 1,463 square kilometres of underwater ice at the base of the Antarctic ice sheet melted under the influence of warm ocean water currents. Scientists demonstrated how the massive ice sheet is retreating as its edges, fed by a multitude of glaciers, are eroded. The discovery emerged from satellite tracking of the ice sheet's "grounding line", the boundary where the ice sheet's base leaves the sea floor and begins to float. Grounding lines typically lie a kilometre or more below the ocean surface and are inaccessible even to deep diving submersibles. Original link Original author: Press

A New Species Of Shark Discovered In The Atlantic Ocean - And It's Freaking Adorable

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Despite having evolved some 250 million years ago, sixgill sharks are still some of the most mysterious creatures living in the oceans. So elusive are these deep-sea predators that researchers have only just figured out that there is a new species  living in the Atlantic. Sixgill sharks are unusual among sharks for being the only extant species to have an extra pair of gill slits (while a few others have yet another pair still). The sixgills have long been split into two species – the bluntnose sixgill shark (Hexanchus griseus) that can live 2,500 meters (8,200 feet) beneath the surface and the bigeye sixgill shark (Hexanchus nakamurai) that is smaller and tends to live closer to the surface, although still out of the reach of most biologists.   The bigeye sixgill has been found in most major oceans, and until now was considered a single species. But a new paper reveals that the...
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Japanese whalers return from Antarctica with huge catch

Three ships from a Japanese whale-hunting fleet returned to their home port of Shimonoseki on Saturday, carrying on board 333 minke whales harpooned during a trip into the Antarctic Ocean. Altogether, five whaling vessels set out on the trip in November amid international protests and condemnation. However, unlike in previous years, the ships reported no encounters with anti-whaling campaigners while on the high seas, Japanese media reported. Japan is a signatory to the International Whaling Commission moratorium on whale hunting, but makes use of a loophole that allows the mammals to be killed for scientific research. Commercial hunting of whales was banned in 1986, but Japan would like to see it permitted once more, with whale meat considered a delicacy by many Japanese. Tokyo makes no secret of the fact that slaughtered whales often end up being eaten. Read more:  Japan's whaling 'sustainable,' representative says Minke whales are now one...
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Can Deepwater Aquaculture Avoid the Pitfalls of Coastal Fish Farms?

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Donna Lanzetta has a big idea: She wants to grow striped bass on a deepwater fish farm, about eight miles off the coast of Southampton, Long Island, where she was born and raised. A lawyer who knows real estate and politics, Lanzetta has garnered the support of local and state officials. Marine scientists and aquaculture experts advise her startup, which is called Manna Fish Farms . She has purchased an automated feed system that can be operated from shore, and plans to rely on hatchlings that are identical to wild striped bass, to ease concerns about escapes. Now all she needs to do is raise a couple of million dollars, persuade a half-dozen or so federal agencies to grant her a permit, and, quite possibly, get an act of Congress to exempt her business from a law, aimed at protecting wild fish stocks, that makes it a crime to possess...
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#Plastic is one of the most enduring materials we make; it takes an estimated 500 to 1,000 years for it to #degrade, but 50 percent of the plastic we produce is used once and then thrown away. Eight million tons of plastic ends up in the #ocean every year. #oceandebris #plasticpollution #sustainability #goblu3 Facts like this are plentiful, but you get the idea. So, a call to arms. Here are some very easy things to give up in order to curb your contribution to the problem.
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#Scubadivers may be more aware of the threats facing #sharks — but we also feel helpless about what we can do. It’s a sobering statistic: Up to 25 percent of the world’s sharks and rays are threatened with #extinction, according to the #IUCN #SharkSpecialistGroup (SSG). Using the #IUCNRedList of #ThreatenedSpecies criteria, the SSG says that of the 1,041 species assessed, 107 rays and 74 sharks are classified as threatened.