Male sea otters live an average of ten to 15 years, while female sea otters live an average of 15 to 20 years. The sea otter s historic range stretched from Japan, along the coast of Siberia and the Aleutian Chain and down the Alaska, British Columbia, Washington, Oregon and California coast to Baja California. Shallow coastal waters of the northern Pacific. Sea urchins, abalone, mussels, clams, crabs, snails and about 40 other marine species. Sea otters are the only mammals other than primates known to use tools.
Otters use small rocks or other objects to pry prey from rocks and to hammer or pry open their food.
They can dive up to 330 feet when foraging for food. Otters rest in coastal kelp forests, often draping the kelp over their bodies to keep from drifting away. Sea otters breed throughout the year. Females give birth to one pup after a gestation period of six to eight months. Oil spills, habitat loss, gill net entanglement and conflict with shellfish fisheries.