Part (1) the weasel family, sea otters are located (2) the coast of the Pacific Ocean in North America. Sea otters often float (3) the surface of water bodies. These aquatic animals crush oysters (4) rocks until they crack wide open, allowing them to devour the delicious flesh inside. 
The otter's fur (5) extremely dense, which (6) them warm in cold water. They (7) known for their playful behavior and intelligence. When (8) , otters can be seen using tools, such as rocks, to help them open shellfish.