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The beluga can swim forward, backwards and upside down. Being able to swim allows them to escape predations and is one of their many adaptations. Beluga whales deposit most of their body fat into a thick layer of blubber that lies just underneath the skin. Blubber accounts for more than 40% of a beluga whale's weight (Sergeant and Brodie, 1969). This blubber layer insulates the whale and streamlines the body. It also functions as an energy reserve. With no dorsal fin on the back of the beluga whale, it allows it to move more freely under floating ice.

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17y ago

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