Meet the Arctic’s New Top Predator … Killer Whales

There’s no doubt that melting sea ice in Hudson Bay is threatening endangered polar bears, but it might also be harmful to beluga whales, seals, narwhals and other marine mammals, scientists are warning. The reason? Melting ice caused by climate change is carving huge swaths of open water for longer periods of time, providing Atlantic killer whales more access to the bay and its rich stocks of prey.

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