ocean-depths:Manatees sleep differently than humans. Instead of one long sleep cycle they take short
ocean-depths:Manatees sleep differently than humans. Instead of one long sleep cycle they take short naps under the waters surface, coming up to breathe every 5 minutes or so. Each manatee will have it’s own favorite way to sleep, and some, like this manatee, will even sleep on their backs. (Photo Credit: Carol Grant) -- source link