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05 August 2011

Western Hudson Bay, Canada

For much of the year, polar bears roam the frozen Hudson Bay, hunting for seals. In the western portion of the bay, the ice begins to melt in late spring. The polar bears then go into hibernation, living off reserves of body fat until the sea freezes again. The ice now breaks up three weeks earlier than it did in the early 1970s, limiting the endangered bears’ access to food.


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