They have long pectoral fins and back fins that can be bent forward. When swimming, they use their pectoral fins to move freely, and they are excellent divers.
| Classification. | Carnivora |
|---|---|
| distribution | West Coast of North America, Northeast Pacific |
| length of an animal (sometimes including and sometimes excluding the tail) | 1.8~2.2m |
| body weight (usu. one's own) | 80-350kg |