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Chinstrap penguin (Pygoscelis antarcticus) walking across the rocks, Antarctica, Polar Regions
Adult king penguins (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
Antarctic shag (Phalacrocorax atriceps bransfieldensis), in flight with nesting material in its beak at Jougla Point, Antarctica, Polar Regions
Antarctic tern (Sterna vittata), on the wreck of the Guvernoren in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions
Antarctic tern (Sterna vittata), on the wreck of the Guvernoren in the Enterprise Islands, Antarctica, Southern Ocean, Polar Regions
View of tidewater glacier deep inside Neko Harbor on the western side of the Antarctic Peninsula, Southern Ocean, Polar Regions
View of tidewater glacier cave found deep inside Neko Harbor on the western side of the Antarctic Peninsula, Polar Regions
Views of the wreck of the Guvernoren, a 20th century whale processing ship, in the Enterprise Islands, Antarctica, Polar Regions
A lone adult emperor penguin (Aptenodytes forsteri), with four adult Adelie penguins (Pygoscelis adeliae), Antarctica, Polar Regions
Expedition ship The Bremen operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Polar Regions
Adult gentoo penguins (Pygoscelis papua), squabble at Booth Island, Antarctica, Southern Ocean, Polar Regions
Chinstrap penguins (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions
Chinstrap penguins (Pygoscelis antarctica), ecstatic display at breeding colony at Half Moon Island, Antarctica, Polar Regions
Humpback whale (Megaptera novaeangliae), surfacing off Half Moon Island in the South Shetland Island Group, Antarctica, Polar Regions
View of calm seas and icebergs with reflected mountains surrounding Damoy Point in Dorian Bay, Antarctica, Polar Regions
Sunset over bergy-bits of ice off the shore of Danco Island, Antarctica, Polar Regions
Chinstrap penguins (Pygoscelis antarctica), breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions
Friendly southern elephant seal (Mirounga leonina), weaner pup close up on the beach at Snow Island, Antarctica, Polar Regions
Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions
Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions
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
Weddell Seal (Leptonychotes weddellii), hauled out on ice at Half Moon Island, Antarctica, Southern Ocean, Polar Regions
Adult gentoo penguin (Pygoscelis papua), porpoising for swimming speed near the Antarctic Peninsula, Southern Ocean, Polar Regions
Antarctic fur seal male and female (Arctocephalus gazella) at Stromness Bay on South Georgia, Polar Regions
Antarctic fur seal pups (Arctocephalus gazella) playing in the kelp on Prion Island in the Bay of Isles on South Georgia, Polar Regions
Antarctic fur seal pup (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions
Adult male Antarctic fur seal (Arctocephalus gazella) head detail, Antarctica, Southern Ocean, Polar Regions
Crabeater seals (Lobodon carcinophaga) hauled out on ice floe near Cuverville Island in the Antarctic Peninsula, Antarctica, Polar Regions
Crabeater seal (Lobodon carcinophaga) hauled out on ice floe near Cuverville Island in 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 near the Antarctic Peninsula, Antarctica, Polar Regions
View of the nearly full moon rising over snow-covered mountains on 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) flukes-up dive in the Weddell Sea near the Antarctic Peninsula, Antarctica, Polar Regions
View of the nearly full moon rising over snow-covered mountains on the Antarctic Peninsula, Antarctica, Polar Regions
First year Adelie penguin (Pygoscelis adeliae) chick at breeding colony at Brown Bluff, Antarctica, Polar Regions
Dead Adelie penguin (Pygoscelis adeliae) attacked, killed and eaten by an Antarctic fur seal at Brown Bluff, 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
Adelie penguin (Pygoscelis adeliae) hatched egg at Petermann Island, Antarctica, Polar Regions
Chinstrap penguin (Pygoscelis antarctica) breeding colony at Baily Head on Deception Island, Antarctica, Southern Ocean, Polar Regions
Chinstrap penguin (Pygoscelis antarctica) molting at Baily Head on Deception Island, Antarctica, Southern Ocean, Polar Regions
Red and green algae-covered snow on Petermann Island, Antarctica, Southern Ocean, Polar Regions
Gentoo penguin (Pygoscelis papua) adult feeding chick at Hannah Point on Livingston Island, Antarctica, Southern Ocean, Polar Regions
Gentoo penguin (Pygoscelis papua) chick at Jougla Point, Wiencke Island, Antarctica, Southern Ocean, Polar Regions
Gentoo penguin (Pygoscelis papua) chick at Jougla Point, Wiencke 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
Views signpost and the Trinity Church at Belingshausen Russian Research Station, Antarctica, Southern Ocean, Polar Regions
Gentoo penguin (Pygoscelis papua) breeding colony at Petermann Island, Antarctica, Southern Ocean, Polar Regions
Gentoo penguin (Pygoscelis papua) breeding colony at Petermann Island, Antarctica, Southern Ocean, Polar Regions
Gentoo penguin (Pygoscelis papua) adult with chicks on Cuverville Island, Antarctica, Southern Ocean, Polar Regions
Views of Base Presidente Eduardo Frei Montalva, Antarctica, Southern Ocean, Polar Regions
Reflections of icebergs in the calm water photographed from an expedition ship operating in Antarctica, Southern Ocean, Polar Regions
Argentine ship the Almirante Viel operating from Ushuaia, Argentina to the Antarctic Peninsula in Antarctica, Southern Ocean, Polar Regions
Close-up of head of Chinstrap penguin (Pygoscelis antarcticus), Half Moon Island, Antarctica, Polar Regions
Crabeater seal with open mouth on ice floe, Antarctica, Polar Regions
Abandoned former whaling station at Port Foster inside of the caldera at Deception Island, South Shetland Islands, Antarctica, Polar Regions
Gentoo penguins (Pygoscelis papua) nesting colony almost buried by snow during snow storm at Brown Bluff, Antarctica, Polar Regions
Adult Weddell seal (Leptonychotes weddellii) hauled out on ice near the Antarctic Peninsula, Antarctica, Polar Regions
A small pod of Type B killer whales (Orcinus nanus) just outside Duse Bay in the Weddell Sea, Antarctica, Polar Regions
Adelie penguins (Pygoscelis adeliae) in snowstorm at Brown Bluff on the Antarctic Peninsula in the Weddell Sea, Antarctica, Polar Regions
Chinstrap penguins (Pygoscelis antarctica) ashore at Useful Island, Antarctica, Polar Regions
King penguin (Aptenodytes patagonicus) breeding and nesting colony on South Georgia Island, Southern Ocean, Polar Regions
Skuas (Catharacta antarctica) fight for the afterbirth of a southern elephant seal, South Georgia
Skuas (Catharacta antarctica) fight for the afterbirth of a southern elephant seal, South Georgia
Southern elephant seal (Mirounga leonina) pup, called weaners once their mothers stop nursing, South Georgia Island, Southern Ocean
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
Ice floes choke the waters of the Lemaire Channel, 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
Sunrise, atmospheric clouds, mountains, glaciers and icebergs, Danco Coast, Gerlache Strait, Antarctic Peninsula, Antarctica, Polar Regions
Misty Mount William, glaciers and icebergs, sunny weather, Anvers Island, from Bismarck Strait, Antarctic Peninsula, Antarctica, Polar Regions
Whale blow (spout) and icy mountains, low lying mist, evening sun, Bransfield Strait, off South Shetland Islands, 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
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
Southern elephant seal bull (Mirounga leoninar), sounding a challenge on the beach at Gold Harbor, South Georgia, Polar Regions
The Argentine Research Station Almirante Brown, located in Paradise Harbor, Antarctica, 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
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
Ventifacts blown by the wind into the soft tuff material at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions
The remains of an old British Base at Deception Island, an active volcano which last erupted in 1969, 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
Large icebergs floating in the Bellingshausen Sea, Antarctica, Polar Regions
Curious type B2 killer whales (Orcinus orca), mother and calf inspecting the ship in the Errera Channel, Antarctica, Polar Regions
Landscape, snow covered South Shetland Islands, Antarctica, Polar Regions
A Gentoo penguin (Pygoscelis papua), in the Antarctic Peninsula, Polar Regions
Icebergs, Antarctica
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