Translations:Adventist Youth Honors Answer Book/Nature/Marine Mammals/34/en
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Blubber also serves as an efficient thermal insulator, making it an essential for thermoregulation. It has advantages over fur (as used in Sea Otters) in this respect; fur can retain heat by holding pockets of air, but under pressure (while diving) the air pockets will be expelled. Blubber, however, does not compress under pressure. It can also aid in buoyancy, and acts to streamline the body.
