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Freezing

Escaping narwhals can freeze and flee at the same time

Escaping narwhals can freeze and flee at the same time

Author: Mariah Quintanilla / Source: Science News for Students Narwhals are known as “unicorns of the sea” for their single, enormous tooth. But these mammals have another oddity. During frantic escape dives, their heart rates slow dramatically. When an...

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