Marine mammals including seals, sea lions, dolphins, porpoise
Open ocean from Alaska to California, and shorelines and near rocky outcrops when hunting
No natural predators, they are at the top of the food chain
River otters live in coastal waters and on rocky shores.
River otters are opportunitistic feeders and prey on a variety of aquatic and terrestrial animals, including perch, sculpin, flatfish, crayfish, mussels, frogs, as well as diving birds.
River otters often escape predation -- birds of prey, coyotes and other large animals -- through their agility in the water and on land.