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Orca gang develops brutal hunting strategy to take on the world's largest shark — 'This is a fascinating behaviour'The orca attacks appear to be led by a large adult male, suggesting that he may be leading the charge on this predatory behavior.
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Orcas start wearing dead salmon hats again after ditching the trend for 37 yearsOrcas off the coast of Washington State are balancing dead fish on their heads like it's the 1980s, but researchers still aren't sure why they do it.
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Orca quiz: Will you sink or swim?Quiz Have a go at our killer whale quiz and find out if you'll make a big splash or a major fail.
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Dolphin in the Baltic Sea has been talking to himself — and researchers think it's a sign he's lonelyA solitary dolphin in the Baltic Sea has been recorded talking to himself, leading researchers to wonder whether he's lonely and calling out for friends.
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Mysterious sound coming from the Mariana Trench has finally been explainedA new study has revealed the exact origin of the Pacific Ocean's mysterious "biotwang" noises, which were first detected by underwater surveys near the Mariana Trench in 2014.
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Sexually frustrated dolphin behind spate of attacks on humans off JapanA stock image of an Indo-Pacific dolphin swimming (not the individual responsible for the recent attacks).
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Boat-ramming orcas may be using yachts as target practice toys, scientists suggestOrcas off the coasts of Spain and Portugal may be using boats as targets to practice hunting their favorite food, Atlantic bluefin tuna.
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Watch heartbreaking footage of humpback whale with missing tail in Washington stateDrone captures footage of a humpback whale missing its tail fluke — an injury suspected to be from long-term entanglement in fishing gear.
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2 young orcas ram sailboat off northern France — 800 miles from 'attack' hotspotCoastguards had to tow a 40-foot-long sailboat back to port after two young orcas severely damaged the boat's rudder near Guilvinec in the French region of Brittany.
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