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Originally Posted by prairie tuber
I've read accounts of walruses tearing apart small aluminum boats that get to close. I've also read somewhere that orcas sometimes predate swimming polar bears, apparently their only other predator aside from humans. Would you know if this is the case?
If you get a chance check out Don Starkell's book 'Paddle to the Arctic'. Its an account of him paddly the Northwest Passage by Kayak over three summers. He had a couple of encounters with walruses and was chased by swimming polar bears more than once.
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Very interesting, I'm buying that book. Yes you are right about the killer whales eating polar bears, even some large walruses have attacked them, some animals found in killer whale stomachs are: Fishes, squids, seals, sea lions, walruses, birds, sea turtles, otters, penguins, cetaceans (both mysticete and odontocete), polar bears, reptiles, and even a moose. They are the only predator of the blue whale. Apparently able to swallow an entire 1500KG walrus.