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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, ...

A team of scientists recorded the brain activity of diving elephant seals in the wild and mapped out the eccentric treks the animals take when they sleep mid-dive. Exactly when and where elephant ...

When it comes to ocean diving, no seal can compete with the elephant seal. While on the hunt for their deep-dwelling squid and fish prey, these blubbery behemoths hold their breath for up to two hours ...

The surprisingly short shut-eye may be a way for the elephant seal to avoid predators—an intriguing find from the first-ever sleep study on marine mammals in the wild. A baby northern elephant seal ...

Maybe you didn't get enough sleep last night, but chances are you're still doing better than the typical northern elephant seal. Scientists have discovered the massive creatures — so named because the ...

WASHINGTON, April 21 (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 ...

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 ...