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The frigid Arctic region has been heating up in recent years. Scientists point to global warming--a gradual increase in Earth's average temperature. The Arctic is virtually covered in ice year-round, but Arctic sea ice is beginning to disappear during the summer months. This melting is endangering animals that rely on sea ice, such as the Pacific walrus. Disappearing ice results in walruses gathering in large numbers on land. This puts the walruses at greater risk of attack by predators. Walruses cannot escape them very easily on land. Walruses also cannot hunt with ease for the seafood they eat.Gathering in large numbers on land also puts calves, or young walruses, in danger. For example, U.S. Geological Survey researchers recently reported that a herd of 3,500 walruses was onshore on the northern coast of Alaska. More than 130 calves were killed when the herd became frightened and stampeded into the water. "The deaths of these walruses is another wake-up call that we will lose the Arctic if we continue on our current course," says Shaye Wolf, a biologist with the Center for Biological Diversity.

Due to global warming the arctic region has been starting to melt. The arctic is basically covered in ice. Even though ice is cold the arctic sea is slowly starting to disappear. This would cause majors problems for animals that rely on the sea ice like polar bears and walruses. This bad for the walruses because they can easily get attacked by predators. It was reported that 130 young walruses were killed in stampede of 3.500 walruses who was trying to get in the sea.