Ismaele Tortella / Eurasian otter (Lutra lutra) hunting in a shoal of Atlantic herring (Clupea harengus), northern Norway, March

Lucas Bustamante / Giant river otter (Pteronura brasiliensis) eating a catfish. Yasuni National Park, Orellana, Ecuador

Doc White / Sea Otter, (Enhydra lutris), young male, Elkhorn Slough, California, USA. January

SCOTLAND: The Big Picture / Otter (Lutra lutra) portrait on shore with boats in background. Argyll, Scotland, UK, August.

Felis Images / Nilgiri marten (Martes gwatkinsii) walking on a fallen branch in Mukurthi National Park, Tamil Nadu, India.

Loic Poidevin / Stoat (Mustela erminea) Creux du Van, Jura Suisse , Switzerland, September.

David Pattyn / Tayra (Eira barbara) climbing in a tree in rainforest habitat with fern covered trees, Bellavista private reserve, Mindo cloud forest area, Ecuador, July

David Pattyn / Tayra (Eira barbara) climbing in a tree in rainforest habitat with fern covered trees, Bellavista private reserve, Mindo cloud forest area, Ecuador, July

George Sanker / North American river otter (Lontra canadensis) swimming with head above water. Acadia National Park, Maine, USA. November.

Danny Green / Sea otter (Enhydra lutris) resting on sea ice, Alaska, USA, June

Danny Green / Sea otter (Enhydra lutris) resting amongst sea ice, Alaska, USA, June

Danny Green / Sea otters (Enhydra lutris) resting on ice, Alaska, USA, June