One of the smallest — and rarest — otter species in the world. Found along the rugged Pacific coast of South America, mainly in Chile and southern Peru, this shy and elusive mammal is unique because it lives almost entirely in coastal marine environments. Unlike most otters that prefer rivers or freshwater lakes, the marine otter makes its home among rocky shorelines, sea caves, and kelp-covered coves, rarely venturing into freshwater habitats. It’s a true ocean-edge specialist, perfectly adapted to a life between the waves and the rocks.

The marine otter has a slim, sleek body, short limbs, webbed feet, and a strong, tapered tail — all of which make it an excellent swimmer. Their dense, waterproof fur is usually dark brown or grayish, with a lighter belly, and is essential for keeping them warm in the chilly coastal waters. Unlike sea otters, marine otters do not have a thick layer of body fat, so their fur is their main defense against the cold.

These otters are carnivores, feeding mainly on fish, crabs, shellfish, and other small marine animals. They are skilled hunters, often diving in shallow water or searching for prey among tide pools and rocky crevices. Marine otters are solitary and highly territorial, usually seen alone or in pairs. They communicate through whistles, growls, and scent markings. Because they are so shy and wary of humans, sightings are rare — which adds to their mystery and charm.

Distribution

Country

Population est.

Status

Year

Comments

Argentina

2022

Chile

2022

Peru

2022