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 (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 ...

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 ...