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

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

Adult gentoo penguin (Pygoscelis papua), feeding chicks at Brown Bluff near the Antarctic Peninsula, Southern Ocean, Polar Regions

Antarctic fur seal pup (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions

King penguin (Aptenodytes patagonicus) breeding and nesting colony at St. Andrews Bay on South Georgia, Southern Ocean, Polar Regions

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

Adult brown skuas, working together to steal a penguin egg near the Antarctic peninsula in the Southern Ocean, Antarctica, Polar Regions

A small group of introduced reindeer (Rangifer tarandus) before eradication in Stromness Bay, South Georgia, Polar Regions

Views of the abandoned whaling station in Stromness Bay on South Georgia, Southern Ocean, Polar Regions

Adult male Antarctic fur seal (Arctocephalus gazella) hauled out on ice near Brown Bluff, Antarctica, Polar Regions

Adult male Antarctic fur seal (Arctocephalus gazella) hauled out on ice near Brown Bluff, Antarctica, Polar Regions

Young wandering albatross (Diomedea exulans) on the wing near the Antarctic Peninsula, Southern Ocean, 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) hauled out on ice at Brown Bluff near the Antarctic Peninsula, Antarctica, Polar Regions

Adult female leopard seal (Hydrurga leptonyx) hauled out on ice at Brown Bluff near the Antarctic Peninsula, Antarctica, Polar Regions

Adult male leopard seal (Hydrurga leptonyx) hauled out on ice in the Gullet near the Antarctic Peninsula, Antarctica, Polar Regions

Unusual window formation in iceberg showing Booth Island in the background on the western side of the Antarctic Peninsula, Antarctica, Polar Regions

View of the nearly full moon rising over snow-covered mountains on the Antarctic Peninsula, Antarctica, Polar Regions

Adelie penguin (Pygoscelis adeliae) on ice floe with leopard seal at Brown Bluff, Antarctica, Polar Regions

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

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

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

Gentoo penguin (Pygoscelis papua) breeding colony, outside refuge hut, at Petermann Island, Antarctica, Southern Ocean, Polar Regions

Gentoo penguin (Pygoscelis papua) chick covered with mud and guano on Cuverville Island, Antarctica, Southern Ocean, Polar Regions

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

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

Expedition ship Expedition operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Southern Ocean, Polar Regions

Expedition ship Europa operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Southern Ocean, Polar Regions

Argentine ship the Puerto Deseado operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Southern Ocean, Polar Regions

Aerial of Cape Horn, southern most point in South America, Hornos island, Tierra del Fuego, Chile, South America

Views of the Errera Channel, between the west coast of Antarctica and Ronge Island, Antarctica, Polar Regions

Gentoo penguin (Pygoscelis papua) hauled out in Port Foster, inside the caldera at Deception Island, Antarctica, Polar Regions

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

Antarctic tern (Sterna vittata) in brash ice near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions

Iceberg detail in and around the Antarctic Peninsula during the austral summer months, Antarctica, Southern Ocean, Polar Regions

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

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

King penguins (Aptenodytes patagonicus) at sunrise on South Georgia Island, Southern Ocean, Polar Regions

Adult gentoo penguin (Pygoscelis papua) with minutes-old newly hatched chick at Gold Harbor on South Georgia

A curious Antarctic Minke whale (Balaenoptera bonaerensis) inspecting Zodiac in Paradise bay, Antarctica, Southern Ocean.

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

A curious Antarctic minke whale (Balaenoptera bonaerensis) in Neko Harbor, Antarctica, Polar Regions

Cooper Bay, Floating Icebergs, South Georgia, South Georgia and the Sandwich Islands, Antarctica, Polar Regions

Young Antarctic fur seal (Arctocephalus gazella), Prion Island, South Georgia, Antarctica, Polar Regions

Rare leucistic gentoo penguin (Pygoscelis papua) in a colony, Gonzalez Videla Station, Waterboat Point, Paradise Bay, Antarctica, Polar Regions

Misty Mount William, glaciers and icebergs, sunny weather, Anvers Island, from Bismarck Strait, Antarctic Peninsula, Antarctica, Polar Regions

Sun shines through the mist, icy Neumayer Channel between Anvers Island and Wiencke Island, Antarctic Peninsula, Antarctica, Polar Regions

Glacier covered mountains of Greenwich Island, from the sea, bright yet misty weather, South Shetland Islands, Antarctica, Polar Regions

Pinnacle rocks, glaciers, mountains of Greenwich Island, from the sea, bright, misty weather, South Shetland Islands, Antarctica, Polar Regions

Low lying clouds over the mountains and blue glaciers of Paradise Bay, Antarctic Peninsula, Antarctica, Polar Regions

Scenic view of Antarctica, Chinstrap Penguins and people roaming around the ice, Antarctica, Polar Regions

Juvenile leucistic Antarctic fur seal (Arctocephalus gazella), with its mother in Stromness Harbor, South Georgia, Polar Regions

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

King penguin (Aptenodytes patagonicus) adults establishing partners at breeding colony 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

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

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

Adult crabeater seals (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

Ventifacts blown by the wind into the soft tuff material at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

Interior view of Port Lockroy, established as Station A in WWII Operation Tabarin, Goudier Island, Antarctica, Polar Regions

The remains of an old British Base at Deception Island, an active volcano which last erupted in 1969, Antarctica, Polar Regions

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

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

An adult gentoo penguin (Pygoscelis papua), with chicks at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

Curious type B2 killer whales (Orcinus orca), mother and calf inspecting the ship in the Errera Channel, Antarctica, Polar Regions

Chinstrap penguin (Pygoscelis antarcticus), Half Moon Island, South Shetland Islands, Antarctica, Polar Regions

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

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

A small pod of pack Ice type B killer whales (Orcinus orca), just after making a Weddell seal kill in the Lemaire Channel, Antarctica, Polar Regions

A small pod of pack Ice type B killer whales (Orcinus orca), just after making a Weddell seal kill in the Lemaire Channel, Antarctica, Polar Regions

Sunrise on king penguins (Aptenodytes patagonicus) at nesting and breeding colony at Salisbury Plain, South Georgia, Polar Regions

King penguin (Aptenodytes patagonicus) chicks (okum boys) at nesting colony at Salisbury Plain, South Georgia, Polar Regions

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

A rare melanistic king penguin (Aptenodytes patagonicus), feeding its okum boy chick at Fortuna Bay, South Georgia Island, Polar Regions

Adult Subantarctic Skua (Catharacta antarctica lonnbergi) cleaning itself in glacier run off at Stromness Bay, South Georgia, Polar Regions

Macaroni penguins (Eudyptes chrysolophus) scrambling up steep cliffs at Hercules Bay on South Georgia Island, Polar Regions

Adult Subantarctic Skua (Catharacta antarctica lonnbergi) on tussac at Salisbury Plain on South Georgia Island, Polar Regions

Views of the Catholic church at the Chilean research base Presidente Eduardo Frei Montalva, Antarctica, Southern Ocean, Polar Regions

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

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

Adelie penguins (Pygoscelis adeliae), with chinstrap penguins (Pygoscelis antarctica), on ice at Booth Island, Antarctica, Polar Regions

Young challenger bull southern elephant seal (Mirounga leonina) fleeing from beachmaster bull, South Georgia Island, Polar Regions

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

View of snow-covered Livingston Island viewed from Half Moon Island in the South Shetland Group, Antarctica, Polar Regions

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

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