Sea Otters are mainly known for their dense, waterproof fur. They have the thickest fur of any marine mammal.
Adult sea otters weigh 14 (30 pounds) to 45 kilograms(100 pounds) and are can be up to 120 centimeters (4 feet) in length.
They live in freshwater, near the coast of California and near Alaska.
Most of them live until 15 years but the longest recorded one was over 20 years old.
They eat a variety of different aquatic wildlife, such as fish, crayfish, crabs, frogs, sea urchins and reptiles such as turtles.
They have a high metabolism so they have to eat very often.
Sea otters form something called a raft, they hold hands with each other to avoid drifiting away from each other.
Unlike river otters, sea otters can have pups whenever they like.
