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Watch dolphins raid crab pots off Australia in never-before-seen footageDolphins in Koombana Bay, Western Australia, have learned how to raid crab pots being used for bait and remove the hooks, footage has revealed.
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Orcas sink another boat in Europe after a nearly hour-long attackFor the fourth time in two years, a group of unusually brazen orcas in southwestern Europe have sunk a sailing boat after relentlessly attacking it for almost an hour on Halloween.
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Watch a huge megapod of acrobatic spinner dolphins in incredible, rare videoA megapod of dolphins with thousands of individuals has been captured on video hunting flying fish off the coast of Costa Rica.
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11 ways orcas show their terrifying intelligenceOrcas have their own dialect, greeting ceremonies and even wore salmon as hats in a weird fad during the 1980s.
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Orcas that hunted alongside humans might be extinctResearchers used DNA analysis and traditional knowledge to learn about an orca named Old Tom and his family's remarkable relationship with humans.
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Identity of mysterious 'mermaid globster' that washed up in Papua New Guinea 'is anyone's guess,' experts sayThe severely decayed remains of a marine creature recently washed up on a beach in Papua New Guinea. Experts can't agree on what the ghostly white lump is, but it is most likely the remains of a marine mammal.
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Scientists finally figure out why hundreds of gray whales keep washing up dead along US coastsThree mass mortality events have struck a population of gray whales off the west coast of North America since the 1980s, and scientists have linked them to changing conditions in the Arctic.
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Orcas are harassing and playing with baby porpoises in deadly game that has lasted 60 yearsScientists may have finally figured out why a population of orcas in the Salish Sea have been tossing porpoises around and taking them into their mouths without eating them.
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Scientists investigate mysterious case of orca that swallowed 7 sea otters wholeThe female orca was found far from her normal hunting ground with six whole sea otters in its stomach and one lodged between its oral cavity and the esophagus.
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