October 19, 2014 at 11:41 am

Rare Footage Captures Sperm Whales Sleeping Vertically

by twistedsifter

 

A pod of sperm whales are observed sleeping vertically, floating in a state of suspended animation. The clip is from the nature series Big Blue (episode 4 of 7). Sperm whales are believed to only sleep for brief periods of 12 or so minutes.

 

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