A southern sea otter uses a rock anvil to break open shells of prey. Monterey Bay Aquarium Hungry sea otters have figured out a workaround when they want to open up a crustacean’s shell without ...

In parts of the ocean where sea otters face stark competition for their favorite kinds of food, some otters are getting by ...

A new study finds that sea otters off California's coast adapt by using tools to find new food sources and prevent injuries.

In parts of the ocean where sea otters face stark competition for their favorite kinds of food, some otters are getting by with the help of tools — like rocks and even glass bottles — that let ...

In California’s Monterey Bay, where the vast Pacific Ocean meets lush kelp forests, sea otters, especially the females, are ...