An animation of an elephant seal’s movement and sleep state during its dive. Gif: Animation by Jessica Kendall-Bar A team of scientists recorded the brain activity of diving elephant seals in the wild ...

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For the first time, scientists have recorded brain activity in a free-ranging, wild marine mammal, revealing the sleep habits of elephant seals during the months they spend at sea. The new findings, ...

During the many months they spend at sea gorging on fish and squid, the massive mammals sleep only about two hours a day. By Annie Roth It long seemed as though African elephants were the champions of ...

WASHINGTON (Reuters) - Sleep is a precious commodity for people and across the animal kingdom, indispensable even as its biological purpose remains somewhat mysterious. We spend about a third of our ...

Elephant seals sleep about 10 hours a day on the beach, but during months-long foraging trips at sea they average just 2 hours of sleep per day. These 2-month-old northern elephant seals are sleeping ...

How would you be able to sleep if you were surrounded by predators who might eat you as soon as you nodded off? Well, a new study shows that elephant seals manage it by only sleeping two hours a day, ...

Northern elephant seals might be masters of multitasking in the animal kingdom because they’ve learned how to sleep and dive at the same time — all while avoiding predators. The elephant seals can ...