Claudio Contreras / Harbour Seal (Phoca vitulina), near San Quintin, Baja California Peninsula, Mexico, December.

Merryn Thomas / Pladda Lighthouse, with Seals (Phoca vitulina) on rocks in foreground at Seal Shore Campsite, Kildonan, Arran, Scotland, August 2011.

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) looking out of water, Iceland, May

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) swimming in wave, Iceland, August

Danny Green / 2020VISION / RESTRICTED USE - Common seal (Phoca vitulina) pup resting on a sandbank during a sandstorm, Donna Nook, Lincolnshire, England, UK, October. 2020VISION Exhibition. 2020VISION Book Plate.

Laurie Campbell / Common / Harbour Seal (Phoca vitulina) bottling / sleeping upright in water and moored in bed of sea thong weed, Islay, Scotland, April

Terry Whittaker / 2020VISION / Common seals (Phoca vitulina) hauled out on saltmarsh, Wallasea Wild Coast Project, RSPB Greater Thames Futurescapes Project, Wallasea Island, Essex, England, UK, October

Terry Whittaker / 2020VISION / Common / Harbour seals (Phoca vitulina) hauled out on mudflats at saltmarsh, Wallasea Island RSPB reserve, Essex, UK, March 2011

Charlie Summers / King Penguin (Aptenodytes patagonicus) adult surrounded by huddled chicks, riding out a snowstorm at Gold Harbor, South Georgia.

Charlie Summers / King Penguin (Aptenodytes patagonicus) adult standing amongst colony of chicks, Gold Harbor, South Georgia, South Atlantic Islands

Alex Mustard / A young Harbour / Common seal (Phoca vitulina) Lundy Island, Devon, England, UK. Bristol Channel, North East Atlantic Ocean. July

Suzi Eszterhas / Harbour / Common Seal (Phoca vitulina) moving from an exposed rock into the water, Katmai National Park, Alaska, USA

Gerrit Vyn / Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina) roosting during spring migration. Gray's Harbor County, Washington, USA, April.

Gerrit Vyn / Adult Dunlin (Calidris alpina) moulting into breeding plumage, foraging during spring migration. Gray's Harbor County, Washington, USA, April.

Jasper Doest / Common Seal (Phoca vitulina) on beach, Donna Nook Nature Reserve, England

Niall Benvie / Common seal {Phoca vitulina} coming out of sea at haul out site, Islay, Argyll, Scotland, UK. February

Suzi Eszterhas / Harbor Seal (Phoca vitulina) pup in shallows, Elkhorn Slough, California

Yva Momatiuk & John Eastcott / Antarctic Fur Seal (Arctocephalus gazella) young male on beach, entangled in green fishing net, deadly marine debris floating in all oceans, Gold Harbour, South Georgia Island, Southern Ocean, Antarct...

Yva Momatiuk & John Eastcott / King Penguin (Aptenodytes patagonicus) group walking, pointing long bills on gravel beach, fall, Gold Harbour, South Georgia, Southern Ocean, Antarctic Convergence

Yva Momatiuk & John Eastcott / King Penguin (Aptenodytes patagonicus) walking in shallow surf near shore in evening, fall, Gold Harbour, South Georgia Island, Southern Ocean, Antarctic Convergence

Florian Graner / Harbour porpoise {Phocoena phocoena} Sognefjord, Norway. Composite

Norbert Wu / Harbor Seal (Phoca vitulina) swimming underwater, Monterey, California

Ingo Arndt / Common Seal (Phoca vitulina) on beach, Europe

Flip Nicklin / Vaquita (Phocoena sinus) by-catch casualty, Baja California, Mexico

Florian Graner / Harbour porpoise {Phocoena phocoena} off Isle of Man, Irish Sea, UK. Digital composite

Kirkendall-Spring / The Ship Canal from Lake Superior to Duluth Harbor Basin, Lake Superior, Minnesota, USA, August 2011

Kevin Schafer / Snowy Owl (Nyctea scandiaca) female on snag, Grays Harbor, Washington

Kevin Schafer / Snowy Owl (Nyctea scandiaca) female, Grays Harbor, Washington

Marie Read / Bonaparte's Gull (Chroicocephalus philadelphia) in winter (non-breeding) plumage, taking flight from water. East Harbor State Park, Lake Erie, Ohio, USA, September.

Marie Read / Bonaparte's Gull (Chroicocephalus philadelphia), winter (non-breeding) plumage, taking flight from water's surface. East Harbor State Park, Lake Erie, Ohio, USA, September.

Marie Read / Bonaparte's Gull (Chroicocephalus philadelphia) in winter (non-breeding) plumage on water. East Harbor State Park, Lake Erie, Ohio, USA, September.

Marie Read / Bonaparte's Gull (Chroicocephalus philadelphia) on water in winter (non-breeding) plumage, catching a fish. East Harbor State Park, Lake Erie, Ohio, USA, September.

Mark Carwardine / Common / Harbour seal (Phoca vitulina) resting on ice floe, Tracy Arm, South East Alaska, USA

Mark Carwardine / Common / Harbour seals (Phoca vitulina) hauled out on rocks near Princess Royal Island, British Columbia, Canada

Steven Kazlowski / Pacific harbour seal (Phoca vitulina richardsi) on ice at Northwestern Fjord, Kenai Fjords National Park, Alaska, USA

Steven Kazlowski / Pacific harbour seal (Phoca vitulina richardsi) on ice in Northwestern Fjord, Kenai Fjords National Park, Alaska, USA

Alex Mustard / 2020VISION / Common seal (Phoca vitulina) at the surface, Cairns of Coll, Inner Hebrides, Scotland, UK, June.

Alex Mustard / 2020VISION / Common seal (Phoca vitulina) at the surface, Cairns of Coll, Inner Hebrides, Scotland, UK, June.

Alex Mustard / 2020VISION / Common seal (Phoca vitulina) at the surface, Cairns of Coll, Inner Hebrides, Scotland, UK, June.

Hiroya Minakuchi / Iceberg, Neko Harbor, Antarctic Peninsula, Antarctica

Konrad Wothe / King Penguin (Aptenodytes patagonicus) running in colony, Gold Harbor, South Georgia Island

Konrad Wothe / Gentoo Penguin (Pygoscelis papua) chick begging for food, Gold Harbor, South Georgia Island

Konrad Wothe / Gentoo Penguin (Pygoscelis papua) parent feeding chick, Gold Harbor, South Georgia Island

Wild Wonders of Europe / Préau / Harbour / Common seal (Phoca vitulina) with head above water, Northern France, February 2010

Konrad Wothe / Harbor Seal (Phoca vitulina) mother and pup on ice floe, Alaska

Merryn Thomas / Seals (Phoca vitulina) on rocks at Seal Shore Campsite, with Pladda Lighthouse beyond. Kildonan, Arran, Scotland, August 2011.

Merryn Thomas / Seal (Phoca vitulina) on rock at Seal Shore Campsite, with Pladda Lighthouse beyond. Kildonan, Arran, Scotland, August 2011.

Merryn Thomas / Seal (Phoca vitulina) on rock at Seal Shore Campsite, with Pladda Lighthouse beyond. Kildonan, Arran, Scotland, August 2011.

Vladimir Medvedev / Western Pacific Harbour Seal / Kuril Seal (Phoca vitulina stejnegeri) hauled out on rocks, Commander Islands, The Far East, Russia.

Vladimir Medvedev / Western Pacific Harbour Seal / Kuril Seal (Phoca vitulina stejnegeri) hauled out on rocks, Commander Islands, The Far East, Russia.

Vladimir Medvedev / Western Pacific Harbour Seal / Kuril Seal (Phoca vitulina stejnegeri) hauled out on rocks, Commander Islands, The Far East, Russia.

Vladimir Medvedev / Western Pacific Harbour Seal / Kuril Seal (Phoca vitulina stejnegeri) group lying on beach, Commander Islands, The Far East, Russia.

Vladimir Medvedev / Western Pacific Harbour Seal / Kuril Seal (Phoca vitulina stejnegeri) swimming, Commander Islands, The Far East, Russia.

Vladimir Medvedev / Western Pacific Harbour Seal / Kuril Seal (Phoca vitulina stejnegeri) hauled out on rocks, Commander Islands, The Far East, Russia.

Vladimir Medvedev / Western Pacific Harbour Seal / Kuril Seal (Phoca vitulina stejnegeri) hauled out on rocks, Commander Islands, The Far East, Russia.

Vladimir Medvedev / Western Pacific Harbour Seal / Kuril Seal (Phoca vitulina stejnegeri) hauled out on rocks, Commander Islands, The Far East, Russia.

Erlend Haarberg / Common / Harbour seals (Phoca vitulina) on ice, Iceland, April

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) with head above water, Iceland, June

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) swimming with head above water, Iceland, June

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) swimming with head above water, Iceland, June

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) swimming with head above water, Iceland, June

Erlend Haarberg / Common / Harbour seal (Phoca vitulina) with head above water, Iceland, June

Colin Seddon / Person tube feeding Common / Harbour seal (Phoca vitulina) pup in care, Scotland

Gerrit Vyn / Laysan albatross (Phoebastria immutabilis) soaring. Gray's Harbor County, Washington, USA October

Gerrit Vyn / Snowy owl (Bubo scandiacus) male hunting from perch in coastal dunes, Grays Harbor County, Washington, USA November.

Gerrit Vyn / Black footed albatross (Phoebastria nigripes) soaring over the open ocean, Gray's Harbor County, Washington, USA October

Gerrit Vyn / Snowy owl (Bubo scandiacus) perched on coastal driftwood, Grays Harbor County, Washington, USA December

Gerrit Vyn / Immature Snowy owl (Bubo scandiacus) in early morning light, Grays Harbor County, Washington, USA December

Gerrit Vyn / Snowy owl (Bubo scandiacus) yawning or bill-stretching, Grays Harbor County, Washington, USA December

Gerrit Vyn / Snowy owl (Bubo scandiacus) perched on a log, Grays Harbor County, Washington, USA December.

Gerrit Vyn / Snowy owl (Bubo scandiacus) maintaing its facial feathers by scratching with its claws and rubbing, Grays Harbor County, Washington, USA December

Gerrit Vyn / Snowy owls (Bubo scandiacus) roosting on coastal driftwood. The immature female in the centre is giving the 'mewing whistle' call as a territorial signal to other owls. Grays Harbor County, Washington...

Laurie Campbell / Common seal (Phoca vitulina) pup on exposed rocks at low tide, Isle of Skye, Inner Hebrides, Scotland, July

Kirkendall-Spring / Boat launching area at the Port Orford Harbor. Port Orford, Oregon, USA, May 2008

Terry Whittaker / 2020VISION / Common seals (Phoca vitulina) resting on saltmarsh, Wallasea Wild Coast Project, RSPB Greater Thames Futurescapes Project, Wallasea Island, Essex, England, UK, October

Terry Whittaker / 2020VISION / Common seals (Phoca vitulina) hauled out on saltmarsh, Wallasea Wild Coast Project, RSPB Greater Thames Futurescapes Project, Wallasea Island, Essex, England, UK, October

Terry Whittaker / 2020VISION / Common seals (Phoca vitulina) hauled out on saltmarsh, Wallasea Wild Coast Project, RSPB Greater Thames Futurescapes Project, Wallasea Island, Essex, England, UK, October

Terry Whittaker / 2020VISION / Common seals (Phoca vitulina) resting on saltmarsh, Wallasea Wild Coast Project, RSPB Greater Thames Futurescapes Project, Wallasea Island, Essex, England, UK, October

Peter Cairns / 2020VISION / Common seal (Phoca vitulina) in surf, Shetland Isles, Scotland, UK, July

Ingo Arndt / Caribou (Rangifer tarandus) feeding on tussock grass, Jason Harbor, South Georgia Island

Ingo Arndt / Southern Elephant Seal (Mirounga leonina) female displaying, Jason Harbor, South Georgia Island

Chris Gomersall / 2020VISION / Common or harbour seals (Phoca vitulina) hauled out on rocks at the Cairns of Coll, Inner Hebrides, Scotland, UK, July 2011

Chris Gomersall / 2020VISION / Common seals (Phoca vitulina) hauled out on rocks at the Cairns of Coll, Inner Hebrides, Scotland, UK, July 2011.

Matthias Breiter / Harbor Seal (Phoca vitulina) group hauled out on rock, Mussel Inlet, British Columbia, Canada

Yva Momatiuk & John Eastcott / Newport Beach and Balboa Island, California

Matthias Breiter / Harbor Seal (Phoca vitulina) on rock, Howe Sound, Canada

Matthias Breiter / Harbor Seal (Phoca vitulina) on rock in Howe Sound, Canada

Matthias Breiter / Harbor Seal (Phoca vitulina) group hauled out on rocks, Howe Sound, Canada

Matthias Breiter / Harbor Seal (Phoca vitulina) hunting Pink Salmon (Oncorhynchus gorbuscha), Ketchikan, Alaska

Matthias Breiter / Harbor Seal (Phoca vitulina) swimming near Juneau, Alaska

Ernie Janes / Common seal (Phoca vitulina) with frozen whiskers, UK

Ernie Janes / Common seal (Phoca vitulina) on beach under wooden structure, UK

Ernie Janes / Common seal (Phoca vitulina) on beach, Norfolk, UK

Ernie Janes / Woman with child and dog watching Common Seal (Phoca vitulina) on beach, Norfolk, UK