Sea otters are the heaviest members of the weasel family, and their fur is deeply luxurious and dense. And for good reason. Unlike most marine mammals, they don’t have a layer of blubber under their ...

Sea otters are one of nature's most fascinating creatures, beloved for their playful personalities and critical role in marine ecosystems. From their dense fur to their impressive tool use, these ...

May 29 is National Sea Otter Day. Here’s a toast to our California sea otters and ten things you might not know about these playful critters. Life at sea Sea otters spend their entire lives in the ...

Sea otters resting at the ocean surface face a simple but serious problem: currents can scatter a sleeping group across open water, leaving individuals exposed and alone. Federal researchers have ...