Espen Bergersen / Ringed seal (Pusa hispida) by 'escape' hole in the sea ice. Tempelfjorden, Svalbard, Norway. April

Espen Bergersen / Ringed seal (Pusa hispida) breathing hole. Tempelfjorden, Svalbard, Norway. April

Espen Bergersen / Dead ringed seal pup (Pusa hispida) on sea ice. Svalbard, Norway

Eric Baccega / Ringed seal (Pusa hispida) surfacing, Baffin Island, Nunavut, Canada, April.

Ole Jorgen Liodden / Ringed seal (Phoca hispida) puppy sleeping on ice floe in Svalbard, Norway, June.

Heidi & Hans-Juergen Koch / Ringed Seal (Pusa hispida) coat, Frankfurt, Hesse, Germany

Staffan Widstrand / Ringed seal (Pusa hispida) hauled out on small rock, Svalbard, Norway

Staffan Widstrand / Ringed seal (Pusa hispida) swimming at surface, just head visible, Svalbard, Norway

Staffan Widstrand / Ringed seal (Pusa hispida) scratching head whilst resting on rock above water, Svalbard, Norway

Peter Cairns / Ringed seal (Pusa hispida) in glacial fjord, Svalbard, Norway

Bryan and Cherry Alexander / Yupik Eskimo hunter using inflatable boat to retrieve Ringed seal (Phoca Hispida) shot at the floe edge in Tkachen Bay. Chukotskiy Peninsula, Chukotka, Siberia, Russia, 2010