The Rock in the Armpit Before a sea otter dives for a clam, it often tucks a flat stone under its forearm, a pocket it keeps ...

Add Yahoo as a preferred source to see more of our stories on Google. Sea otters are highly intelligent marine creatures. Their intelligence is shown by their inquisitiveness and their use of tools.

CNN — When sea otters hammer mussel shells against rocks to help open them, they're leaving behind their own archaeological record that can't be compared to any other creature, according to a new ...

The rocky coves along California’s coast are home to one of nature’s most charismatic animals: the otter. Large groups of sea otters bob among the kelp, anchoring in place by wrapping themselves in ...

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 ...