River otter (Lutra canadensis) on frozen Yellowstone Lake, Yellowstone National Park, Wyoming, United States of America, North America

Water vole (Arvicola terrestris). Alston Moor, Cumbria, UK

Water vole (Arvicola terrestris), swimming, Gloucester and Sharpness Canal, Shepherd's Patch, Gloucestershire, England, United Kingdom, Europe

Sea otter (enhydra lutris), monterey, usa, in water, hands upright, close, up.

Not for sale in france for postcards between september 2010 to august 2013. Sea otter (enhydra lutris), monterey, usa, resting on back in water, close, up.

Sea otter, enhydra lutris. Swimming; lying on its back; summer. Restrictions for postcards in german-speaking areas

Sea otter (enhydra lutris), monterey, usa, biting mussel, close, up

Sea otter, enhydra lutris. Swimming; lying on its back; summer; .

European otter (lutra lutra) portrait, british wildlife centre, uk

Sea otter (enhydra lutris), monterey, usa, biting mussel. close, up in water.

Sea otter (enhydra lutris), monterey, usa, close, up in water.

Sea otter (enhydra lutris), monterey, usa, resting on back in water, close, up

Beaver, castor canadensis. Swimming and pulling a branch ; red tundra refleced in the water. Canada

Swimming duckbill platypus, Ornithorhynchus anatinus, Atherton Tablelands, Queensland, Australia

Diver, subglacial diving, ice diving, in the frozen Black Sea, a rare phenomenon, last time it occured in 1977, Odessa, Ukraine, Eastern Europe

North American River Otter, Lutra canadensis, South Coast, Gaspe peninsula, Quebec, Canada, North America

North American River Otter, Lutra canadensis, South Coast, Gaspe peninsula, Quebec, Canada, North America

Northern River Otter, Bend, Oregon, Usa

Close Up Of A Mink (Neovison Vison), Valdez, Alaska, United States Of America