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Adelie penguin (Pygoscelis adeliae) adult feeding chick at breeding colony at Brown Bluff, Antarctica, Polar Regions

First year Adelie penguin (Pygoscelis adeliae) chicks at breeding colony at Brown Bluff, Antarctica, Polar Regions

First year Adelie penguin (Pygoscelis adeliae) chicks at breeding colony at Brown Bluff, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae) hauled out onto the ice near Adelaide Island, Antarctica, Polar Regions

Chinstrap penguin (Pygoscelis antarctica) breeding colony at Baily Head on Deception Island, Antarctica, Southern Ocean, Polar Regions

Adult chinstrap penguin (Pygoscelis antarctica) feeding chick at Baily Head on Deception Island, Antarctica, Polar Regions

Chinstrap penguin (Pygoscelis antarctica) breeding and molting at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

Chinstrap penguin (Pygoscelis antarctica) molting at Baily Head on Deception Island, Antarctica, Southern Ocean, Polar Regions

Chinstrap penguin (Pygoscelis antarctica) breeding colony at Baily Head on Deception Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) chick chasing adult for food at Hannah Point on Livingston Island, Antarctica, Polar Regions

Gentoo penguin (Pygoscelis papua) adult feeding chick at Hannah Point on Livingston Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) chicks with ice at Brown Bluff, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) chicks at Jougla Point, Wiencke Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) breeding colony on Booth Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguins (Pygoscelis papua), Port Lockroy British Antarctic Base, Wiencke Island, Antarctica, Polar Regions

Close up of king penguin's (Aptenodytes patagonicus) downy plumage (okum boy) on South Georgia Island, Southern Ocean, Polar Regions

King penguins (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

King penguins (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

King penguins (Aptenodytes patagonicus) in downy plumage (okum boys) on South Georgia Island, Polar Regions

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

Female southern elephant seal (Mirounga leonina) with newborn pup as skuas (Catharacta antarctica) fight for the afterbirth, South Georgia

Skuas (Catharacta antarctica) and female southern elephant seal with newborn pup near abandoned whaling station, Stromness Bay, South Georgia

Gentoo penguin chicks (Pygoscelis papua) in ecstatic display at Brown Bluff, Antarctica, Polar Regions

Adult crabeater seals (Lobodon carcinophaga), from the National Geographic Explorer in the Lemaire Channel, Antarctica, Polar Regions

Type Big B killer whales (Orcinus orca) searching ice floes for pinnipeds in the Weddell Sea, Antarctica, Polar Regions

Type Big B killer whales (Orcinus orca), searching ice floes for pinnipeds in the Weddell Sea, Antarctica, Polar Regions

Type Little B killer whales (Orcinus orca), surfacing in the Gerlache Strait, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua), leaping off ice in Lindblad Cove, Trinity Peninsula, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua), underwater in clear water in Lindblad Cove, Trinity Peninsula, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua), underwater in clear water in Lindblad Cove, Trinity Peninsula, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua), underwater in clear water in Lindblad Cove, Trinity Peninsula, Antarctica, Polar Regions

Adult emperor penguin (Aptenodytes forsteri), hauled out on ice near Snow Hill Island, Weddell Sea, Antarctica.

An Antarctic blue-eyed shag (Leucocarbo bransfieldensis), sits atop a rock in the Antarctic peninsula, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis Papua), performing a mating ritual in the Antarctic peninsula, Antarctica, Polar Regions

Antarctica fur seal pup (Arctocephalus gazella), above and below underwater in Husvik Bay, South Georgia, Polar Regions

Adult chinstrap penguins (Pygoscelis antarcticus), porpoising through the sea in Cooper Bay, South Georgia, Polar Regions

King penguin (Aptenodytes patagonicus) breeding colony at Salisbury Plain, South Georgia, Polar Regions

King penguin (Aptenodytes patagonicus) chicks called Okum Boys at Gold Harbor, South Georgia, Polar Regions

Sunrise on king penguin (Aptenodytes patagonicus) breeding colony at Gold Harbor, South Georgia, Polar Regions

Adult King penguin (Aptenodytes patagonicus) breeding colony at Gold Harbor, South Georgia, Polar Regions

King penguin (Aptenodytes patagonicus) head detail at its breeding colony at Gold Harbor, South Georgia, Polar Regions

King penguin (Aptenodytes patagonicus) adults establishing partners at breeding colony in Gold Harbor, South Georgia, Polar Regions

King penguin (Aptenodytes patagonicus) adult with chick at breeding colony in Gold Harbor, South Georgia, Polar Regions

Young southern elephant seal bulls (Mirounga leoninar), mock-fighting on the beach in Gold Harbor, South Georgia, Polar Regions

Southern elephant seal bull (Mirounga leoninar), on the beach at sunrise in Gold Harbor, South Georgia, Polar Regions

Southern elephant seal bull (Mirounga leoninar), sounding a challenge on the beach at Gold Harbor, South Georgia, Polar Regions

Young southern elephant seal bulls (Mirounga leoninar), mock-fighting on the beach in Gold Harbor, South Georgia, Polar Regions

Southern elephant seal bull (Mirounga leoninar), in the tussah grass at Salisbury Plain, South Georgia, Polar Regions

Female southern elephant seal with young male (Mirounga leoninar), on the beach at Salisbury Plain, South Georgia, Polar Regions

Southern elephant seal bull (Mirounga leoninar), on the beach at sunrise in Gold Harbor, South Georgia, Polar Regions

Southern elephant seal (Mirounga leoninar) weaners at breeding beach in Gold Harbor, South Georgia, Polar Regions

Young southern elephant seal bulls (Mirounga leoninar), molting on the beach in Gold Harbor, South Georgia, Polar Regions

Southern elephant seal pup (Mirounga leoninar), on the beach at dawn in Gold Harbor, South Georgia, Polar Regions

A pod of Type A killer whales (Orcinus orca), surfacing off the northwest coast of South Georgia, Polar Regions

Young southern elephant seal bull (Mirounga leoninar), molting on the beach in Gold Harbor, South Georgia, Polar Regions

Southern elephant seals (Mirounga leoninar), at breeding beach in Gold Harbor, South Georgia, Polar Regions

Southern elephant seals (Mirounga leoninar), on the beach at sunrise in Gold Harbor, South Georgia, Polar Regions

Rusting machinery and buildings at the abandoned whaling station at Stromness Harbor, South Georgia, Polar Regions

Rusting machinery and buildings at the abandoned whaling station at Stromness Harbor, South Georgia, Polar Regions

Antarctic shag (Leucocarbo bransfieldensis) in breeding plumage, Barrientos Island, Antarctica, Polar Regions

Chinstrap penguin (Pygoscelis antarcticus), leaping from the sea at breeding colony on Barrientos Island, Antarctica, Polar Regions

Antarctic shag (Leucocarbo bransfieldensis) in breeding plumage, Barrientos Island, Antarctica, Polar Regions

A group of Adelie penguins (Pygoscelis adeliae) on sea ice in Duse Bay, Weddell Sea, Antarctica, Polar Regions

Large raft of gentoo penguins (Pygoscelis papua), group feeding at Booth Island, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua), breeding colony on Weincke Island, Naumeyer Channel, Antarctica, Polar Regions

Former British Base A, now a museum and post office at Port Lockroy on tiny Goudier Island, Antarctica, Polar Regions

Adelie penguin (Pygoscelis adeliae), porpoising in the sea in Antarctic Sound, Trinity Peninsula, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), porpoising in the sea in Antarctic Sound, Trinity Peninsula, Antarctica, Polar Regions

A pair of chinstrap penguins (Pygoscelis antarcticus), on Robert Island, South Shetland Islands, Antarctica, Polar Regions

Chinstrap penguin (Pygoscelis antarcticus), on eggs at Coronation Island, South Orkney Islands, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), breeding colony in a snowstorm at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), marching on the beach at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

Adelie penguin (Pygoscelis adeliae), parent on a chick and egg at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), on an ice floe at a breeding colony on Joinville Island, Antarctica, Polar Regions

Adelie penguin (Pygoscelis adeliae) parent feeding chicks at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), breeding colony in a snowstorm at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

Adelie penguin (Pygoscelis adeliae) parent feeding chicks at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

Chinstrap penguins (Pygoscelis antarcticus), leaping in to the sea on Coronation Island, South Orkneys, Antarctica, Polar Regions