Defenders in Alaska

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Polar Bears, © Joan Robins
Species at Risk
Often referred to as the largest land carnivores in the world, polar bears are actually marine mammals, spending much of their time on Arctic sea ice hundreds of miles from land.
Fact Sheet
America's own reindeer are one of the most critically endangered mammals in the U.S.
walrus, © Joel Garlich-Miller/USFWS
Fact Sheet
The walrus is a large marine mammal with flippers, a broad head, short muzzle, small eyes, tusks and whiskers. Scientists recognize two subspecies of walrus – the Atlantic walrus and the Pacific walrus.