News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   DCL/Getty Images |   Natural Born Enemies? A Greenland shark and adult polar bear. The unusual discovery of a polar bear jawbone in the gut of a Greenland shark is raising questions about whether the sharks' natural diet is changing due to the effects of climate change in the Arctic. Whether the bear was hunted or eaten as carrion is unknown.   « back to article

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