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The Bering Sea covers more than 700,000 square miles and is demarcated from the North Pacific Ocean by the Alaska Peninsula and Aleutian Islands. The sea is considered one of the world’s most productive fisheries; its northern portions house sea ducks, gray whales, bearded seals and walruses, all of which feed on cold-water critters.
But warming temperatures of recent years have caused the environment to change from Arctic to sub-Arctic conditions in the region and have created an inviting haven for animals that were previously confined to the warmer waters of the south.
These warmer waters are bad news for animals adapted to cold-water environments, however. These creatures have to move north in search of cooler waters, which in turn is causing problems for people who live off of them.