By Marta Serafinko Aug 7 (Reuters) - Anyone who has tried to keep a cork underwater knows it takes effort. Yet sperm whales ...
Blowing bubbles helps sperm whales sleep soundly beneath the waves, new research reveals. It stops them from floating to the surface while they're grabbing a nap, say scientists. While little is known ...
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Researchers find sleeping sperm whales blow bubbles to avoid floating to the surface
The discovery gives researchers a look at how one of the ocean's largest animals manages to get enough rest.
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