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Opportunistic orcas have developed a new feeding behavior that appears to be killing themMore orcas have died entangled in fishing gear in Alaska this year than in previous years, which may be linked to a "new behavior" where they feed in front of ascending fishing nets.
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Could an impending rise in solar storms cause more whales to strand?Past research suggests that some whale species are more likely to get lost and accidentally beach themselves during periods of increased solar activity, such as the upcoming solar maximum.
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Lolita, the 2nd-oldest orca in captivity, who was set to be released to the wild, has diedLolita, also known as Tokitae, died before she could be returned to her native waters in the Pacific Northwest.
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Mystery mass death of seals on remote, uninhabited Siberian island under investigationCarcasses of seals, sea lions and birds were found on Tyuleniy Island in the Sea of Okhotsk by environmental groups who were there to clear up plastic pollution.
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Tiny 'King Tut' whale 'lived fast and died fast' in ancient Egyptian watersPaleontologists in Egypt have described a new species of extinct whale that was dwarfed by other basilosaurids.
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Baby Moby Dick? Rare white humpback whale calf filmed off AustraliaThe latest footage follows two other sightings of all-white, newborn humpback calves — but experts aren't convinced these whales are albino like the famous Migaloo.
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What is the deepest-diving mammal?One marine mammal has been documented diving as deep as 9,816 feet — equivalent to the depth of over 30 Statues of Liberty stacked on top of one another.
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This colossal extinct whale was the heaviest animal to ever livePaleontologists in Peru have described an ancient species of whale that was way heavier than a blue whale.
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Watch orca tear open whale shark and feast on its liver in extremely rare footageThe orca "slurped in the liver and then the whale shark just fell and descended down, with no movement," James Moskito of Ocean Safaris told Live Science.
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