Sea otter, found along the coast of the Pacific Ocean in North America and Asia;
Congo clawless otter, found in the lower Congo basin;
Asian small-clawed otter, found in Southeastern Asia, including Indonesia and the Philippines;
African clawless otter, found along the eastern coast of Africa (from South Africa to Kenya), southern coast of Africa (from Ethiopia to Cameroon), and central inland Africa;
Giant otter, found in La Plata River system;
Marine otter, found on the western coast of South America;
Neotropical river otter, found in South America, Central America, and the island of Trinidad;
Southern river otter, found in Argentina and Chile;
North American river otter, found throughout most of the continent (from the Rio Grande to Alaska);
Smooth-coated otter, found in southern and southeast Asia);
Spotted-necked otter, found in sub-Saharan Africa, in Lake Tanganyika and Lake Victoria;
Hairy-nosed otter, found in Southeast Asia;
Eurasian otter, found widespread in Europe, Asia, and Africa.