Did you know that sea otters have favorite rocks they keep around to help them open up clam shells and other shelled mollusks? They have loose pockets of fur under each of their arms where they store ...

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 ...

Credit: flickr Sea otters are one of the few non-human species known to use tools. They often carry small rocks to crack open hard shells like clams, crabs, or mussels. This behavior demonstrates ...