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

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

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

Jim Manthorpe / Close-up of a Common otter (Lutra lutra) grooming and rolling in seaweed, Western Scotland. March.

John & Mary-Lou Aitchison / Female European otter (Lutra lutra) grooming her cub on a rock, with the cub falling off and into the water, Scotland, UK, November.

John & Mary-Lou Aitchison / Female European otter (Lutra lutra) grooming her cub, Scotland, UK, November.

John & Mary-Lou Aitchison / Female European otter (Lutra lutra) on a rock grooming her cub before rolling over and scent marking, Scotland, UK, November.

John & Mary-Lou Aitchison / Female European otter (Lutra lutra) bringing a fish to a juvenile sleeping on a rock, Scotland, UK, November.

Ingo Arndt / European river otter {Lutra lutra} swimming, Europe

Ingo Arndt / Two European river otters {Luyra lutra} resting a on grass bank. Captive

Ingo Arndt / European river otters {Lutra lutra} Europe

SCOTLAND: The Big Picture / Eurasian otter (Lutra lutra) portrait, Scotland, UK, April.