When sperm whales need a nap, they take a deep breath, dive down about 45 feet and arrange themselves into perfectly-level, vertical patterns. They sleep sound and still for up to two hours at a time between breaths, in pods of five or six whales, presumably for protection. 1/2 pic.twitter.com/yfFCff8Rrz
— Dr. Clayton Forrester (@DrClaytonForre1) August 23, 2022
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