Nevertheless, those hurdles didn't stop a wild sea otter from befriending a Californian commercial fisherman in the most ...

By using tools to crack open shells, otters can avoid ... having their preferred prey.” A southern sea otter uses a rock anvil to feed on a clam. Image courtesy of Monterey Bay Aquarium.

I believe that no red sea urchins, no abalone and no clams are on the Central Coast because of the import of the northern sea otter (an alien species). Sea urchins, abalone and clams keep the reef ...