An elephant seal covers itself in sand to cool off. Elephant seals spend most of their lives in the ocean, regularly diving thousands of feet deep to feed. They’re adapted to survive in deep frigid waters as cold as a few degrees above freezing, sporting a thick blubber layer and no sweat glands. When they haul out on beaches to breed, they regulate their temperature through active cooling, flipping cool damp sand onto their backs to cool off and block the sun.
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