National Geographic ChannelNat Geo WildNat Geo PeopleNat Geo People
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A remarkable story is unfolding in the Arctic. As sea ice melts and the polar bear struggles to survive in a fast-warming world, another animal is rapidly moving into the northern regions of the planet – and it is starting to usurp the polar bear’s dominant role. Will the killer whale takes the polar bear's place as top predator in the Arctic?
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