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Antarctic shag (Leucocarbo bransfieldensis) taking flight with nesting material at Port Lockroy, Antarctica, Polar Regions

An adult crabeater seal (Lobodon carcinophaga), hauled out on the ice in Antarctic Sound, Weddell Sea, Antarctica, Polar Regions

An adult crabeater seal (Lobodon carcinophaga), hauled out on the ice in Antarctic Sound, Weddell Sea, Antarctica, Polar Regions

A curious adult leopard seal (Hydrurga leptonyx), underwater near Coronation Island, Antarctica, Polar Regions

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

Adult humpback whale (Megaptera novaeangliae) breaching in the Gerlache Strait, Antarctica, Polar Regions

Adult Adelie penguins (Pygoscelis adeliae) walking on first year sea ice in Active Sound, Weddell Sea, Antarctica, Polar Regionswhitening of whites, slight increase in contrast

A curious male leopard seal (Hydrurga leptonyx), underwater at Monroe Island, South Orkney Islands, Antarctica, Polar Regions

Adult king penguins (Aptenodytes patagonicus) amongst chicks at breeding colony at Gold Harbour, South Georgia Island, Polar Regions

Icebergs near the Antarctic Peninsula during the summer months, Antarctica, Southern Ocean, Polar Regions

Chinstrap penguins (Pygoscelis antarctica), ecstatic display at breeding colony at Half Moon Island, Antarctica, Polar Regions

Adult gentoo penguins (Pygoscelis papua), returning and coming from the sea at Booth Island, Antarctica, Southern Ocean, Polar Regions

Adult gentoo penguins (Pygoscelis papua), returning and coming from the sea at Booth Island, Antarctica, Southern Ocean, Polar Regions

Leucistic caused by lack of melanin, or blond Antarctic fur seal pup (Arctocephalus gazella) on South Georgia, Polar Regions

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

Adelie penguins (Pygoscelis adeliae), in snow storm at breeding colony at Brown Bluff, Antarctic Peninsula, Antarctica, Polar Regions

Adult macaroni penguins (Eudyptes chrysolophus) plunging into the sea leaving their breeding colony at Elsehul on South Georgia, Southern Ocean, Polar Regions

Adult male Antarctic fur seal (Arctocephalus gazella) harassing a skua at Torgersen Island, Antarctica, Polar Regions

Views of the abandoned whale processing station at Whalers Bay on Deception Island, South Shetland Islands, Antarctica, Polar Regions

Adult female leopard seal (Hydrurga leptonyx) stalking juvenile Adelie penguins at Brown Bluff near the Antarctic Peninsula, Antarctica, Polar Regions

Crabeater seals (Lobodon carcinophaga) hauled out on ice floe in Neko Harbor near the Antarctic Peninsula, Antarctica, Polar Regions

Crabeater seals (Lobodon carcinophaga) hauled out on ice floe in Neko Harbor near the Antarctic Peninsula, Antarctica, Polar Regions

Adult Weddell seal (Leptonychotes weddellii) hauled out on ice near the Antarctic Peninsula, Southern Ocean, Polar Regions

Humpback whale (Megaptera novaeangliae) surfacing in the Weddell Sea near the Antarctic Peninsula, Antarctica, Polar Regions

Adelie penguin (Pygoscelis adeliae) breeding colony at Brown Bluff on the eastern side of the Antarctic Peninsula, Antarctica, Polar Regions

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

Gentoo penguin (Pygoscelis papua) adult with chicks on Cuverville Island, Antarctica, Southern Ocean, Polar Regions

Antarctic shag (Phalacrocorax (atriceps) bransfieldensis) at nesting site amongst gentoo penguins at Jougla Point, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae) in snowstorm at Brown Bluff on the Antarctic Peninsula in the Weddell Sea, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua), early morning overlooking Neko Harbour glacier, Graham Land, Antarctic Continent, Antarctica, Polar Regions

Glaciers and mountains of Cape Errera with dramatic sky, Wiencke Island, from Bismarck Strait, Antarctic Peninsula, Antarctica, Polar Regions

Gentoo penguin (Pygoscelis papua) pair communicating, Damoy Point, Dorian Bay, Wiencke Island, Antarctic Peninsula, Antarctica, Polar Regions

Mountains and glaciers of False Cape Renard, Lemaire Channel entrance, evening light, Antarctic Peninsula, Antarctica, Polar Regions

Low lying Half Moon Island, Livingston Island mountains and glaciers, evening sun, South Shetland Islands, Antarctica, Polar Regions

Snow-covered mountains and tidewater glaciers in Mikkelsen Harbor, Trinity Island, Antarctica, Polar Regions

A young emperor penguin (Aptenodytes forsteri) hauled out on the ice near Snow Hill Island, Weddell Sea, Antarctica, Polar Regions

Curious type B2 killer whale (Orcinus orca), inspecting the ship in the Errera Channel, Antarctica, Polar Regions

Emperor penguin (Aptenodytes forsteri) and chick, Snow Hill Island, Weddell Sea, Antarctica, Polar Regions

Emperor penguin chick (Aptenodytes forsteri), Snow Hill Island, Weddell Sea, Antarctica, Polar Regions

Adult light-mantled sooty albatross (Phoebetria palpebrata) in flight in the Drake Passage, Antarctica, Polar Regions

Above and below view of glacial ice near Wiencke Island, Neumayer Channel, Antarctica, Polar Regions

Sea ice, tabular icebergs, and brash ice in Erebus and Terror Gulf, Weddell Sea, Antarctica, Polar Regions

An adult southern fulmar (Fulmarus glacialoides), feeding on krill in Lindblad Cove, Trinity Peninsula, Antarctica, Polar Regions

An adult blue whale (Balaenoptera musculus), surfacing in the Drake Passage, Antarctica, Polar Regions

Creative motion blur image of adult king penguins (Aptenodytes patagonicus) returning to the sea on South Georgia, Polar Regions

A large pod of Gerlache Strait type B killer whales (Orcinus orca), traveling and socializing in Gerlache Strait, Antarctica, Polar Regions

British Antarctic Survey (BAS) research plane landing at the Chilean Research base Frei on King George Island, Antarctica, Polar Regions

Adult chinstrap penguin (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), in snow storm at breeding colony at Brown Bluff, Antarctic Peninsula, Antarctica, Polar Regions

Adult brown skuas (Catharacta antarctica) feeding on a penguin carcass near the Antarctic peninsula, Antactica, Polar Regions

Crabeater seal (Lobodon carcinophaga) hauled out on ice floe in the Lemaire Channel near the Antarctic Peninsula, Antarctica, Polar Regions

Adult cape petrels (Daption capense) feeding near Deception Island, Antarctica, Southern Ocean, Polar Regions

Adult female leopard seal (Hydrurga leptonyx) stalking juvenile Adelie penguins on ice at Brown Bluff, Antarctic Peninsula.

Gentoo penguins (Pygoscelis papua) nesting colony almost buried by snow during snow storm at Brown Bluff, Antarctica, Polar Regions

Adelie penguin (Pygoscelis adeliae) in snowstorm at Brown Bluff on the Antarctic Peninsula in the Weddell Sea, Antarctica, Polar Regions

King penguin (Aptenodytes patagonicus) breeding and nesting colony on South Georgia Island, Southern Ocean, Polar Regions

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

Staff from the Lindblad Expedition ship National Geographic Explorer (shown here is Photo Instructor CT Ticknor) working in Antarctica.

The abandoned Norwegian whaling station at Grytviken, now cleaned and open to tourism, South Georgia Island, Polar Regions

Gentoo penguins (Pygoscelis papua), playing in a meltwater pool at Jougla Point, Wiencke Island, Antarctica, Polar Regions

Former Grytviken whaling station, King Edward Cove, South Georgia, South Georgia and the Sandwich Islands, Antarctica, Polar Regions

Former Grytviken whaling station under snow, King Edward Cove, South Georgia, South Georgia and the Sandwich Islands, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua) use a penguin highway, Neko Harbour, Anvord Bay, Antarctic Peninsula mainland, Antarctica, Polar Regions

Sea ice off Una Peaks and False Cape Renard, Lemaire Channel entrance, Antarctic Peninsula, Antarctica, Polar Regions

Non-tabular iceberg off glaciated, mountainous Anvers Island, blue sky, Antarctic Peninsula, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua) come ashore, Cuverville Island, Errera Channel, Danco Coast, Antarctic Peninsula, Antarctica, Polar Regions

Low lying mist and clouds over mountains, glaciers and icebergs of Paradise Bay, calm waters, Antarctic Peninsula, Antarctica, Polar Regions

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

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

Southern elephant seals (Mirounga leoninar), resting on the beach with penguins, at Gold Harbor, South Georgia, Polar Regions

The Argentine Research Station Almirante Brown, located in Paradise Harbor, Antarctica, Polar Regions

Snow-covered mountains, glaciers, and icebergs in Lindblad Cove, Charcot Bay, Trinity Peninsula, Antarctica, Polar Regions

An adult crabeater seal (Lobodon carcinophaga), hauled out on the ice in Antarctic Sound, Weddell Sea, Antarctica, Polar Regions

A mother leopard seal (Hydrurga leptonyx), hauled out on ice floe with her newborn pup, Paradise Bay, Antarctica, Polar Regions

A massive series of waves formed after a huge calving event from the glacier in Neko Harbor, Antarctica, Polar Regions

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

A group of emperor penguins (Aptenodytes forsteri), on the ice near Snow Hill Island, Weddell Sea, Antarctica, Polar Regions

Adult fin whales (Balaenoptera physalus), feeding on krill near Coronation Island, South Orkney Islands, Antarctica, Polar Regions

An adult humpback whale (Megaptera novaeangliae), flukes up dive amongst ice at Brabant Island, Antarctica, Polar Regions

A gentoo penguin (Pygoscelis papua) breeding colony on Pleneau Island in early season, Antarctica, Polar Regions

Icebergs surround the glacier covered volcano called Peter I Island in the Bellingshausen Sea, Antarctica, Polar Regions

Ice chokes the waters surrounding James Ross Island and Lockyer Island, Weddell Sea, Antarctica, Polar Regions