The Sea Otter eats, sleeps, mates, and even gives birth at sea, and can remain underwater for 4 to 5 minutes. When it dives for shellfish, such as mussels or abalone, it also brings up a small rock. It then floats on its back, places the rock on its chest, and cracks the shell against it. The Sea Otter watches for danger by standing in the water and shading its eyes with both forefeet.
At night, it wraps strands of kelp, which is seaweed, about its body to secure its position in the kelp beds where it sleeps. A Sea Otter is a large, dark brown saltwater mammal with a grayish face, short thick tail and hind feet like flippers. The length of an Otter is about 24 to 60" long. They live in shallow ocean waters near shores with seaweed and shellfish. They live along Pacific Coast from Alaska to California .