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A gentoo penguin peeks beneath the water before taking the plunge.

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A polar bear shakes water off its head as it breaks the surface.

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An elephant seal pup plays in a freshwater stream.

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On alert, an adult leopard seal scans her surroundings.

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A flock of gentoo penguins swim through the waters of Drygalki Fjord.

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A brilliant display of aurorae in the Yukon Territory.

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A pod of male narwhals gather at the Arctic ice edge to eat cod.

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A female leopard seal presents her kill to the photographer.

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Sated from a morning feast, a leopard seal rests on glacier ice.

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Male narwhals caress one another with their tusks.

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Narwhals gather in an ice hole to breath.

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Narwhals are resting in a hole in the sea ice.

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A bowhead whale surfaces from a dive at the floe edge.

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Spring melt water trails lead to a seal hole in the sea ice.

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The eye of a macaroni penguin.

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Leopard seals roam so widely, that little is known about them.

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A male polar bear taking its image with a camera trap.

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A winged pteropod drifting in the open water feeding on plankton.

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A walrus returning to its haulout site after feeding on clams.

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A young male polar bear leaping onto drifting pack ice.

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Two chinstrap penguin chicks rest on the side of a large iceberg.

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A penguin-speckled iceberg floats off South Georgia.

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A southern elephant keeps cool under a flipperful of sand.

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Nutrients from sea birds drop into the ocean nourishing sea life.

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King penguins run the gauntlet of testy elephant seals.

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Austfonna Ice Cap melting during the summer months.

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Dovekies returning from sea to nest after feeding on copepods.

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A pod of male narwhals gather in the darkness below the Arctic ice.

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In a death shake, a leopard seal shreds a penguin chick.

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A pair of light-mantled sooty albatross soar above nesting cliffs.

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Atlantic walruses migrating from Russia.

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A polar bear and her cub rest on an iceberg in the Arctic Ocean.

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A beautiful rainbow rises from its reflection on the icy Arctic Ocean.

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A leopard seal brings her catch unnervingly close to the photographer.

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A kittiwake soars over a large iceberg in a fiord in Svalbard.

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Aerial view of caribou migrating through the snow.

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Reindeer push through an extreme blizzard.

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Elephant seal bulls in their prime battle for the right to breed.

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King penguins and elephant seals cover Saint Andrews Beach.

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A bull elephant seal in Fortuna Bay rests in the surf zone.

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Male narwhals migrate through Lancaster Sound.

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A Svalbard reindeer runs across a summer-green Arctic landscape.

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Atlantic walrus bull swimming near sea ice.

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Going go sea, gentoo penguins, line up and quickly dive in together.

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A walrus calf surrounded by adult walruses.

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Atlantic walrus calf in refuge on mother's back, resting on ice floe.

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A female polar bear rejecting the advances of a massive male.

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A polar bear hunts in -40 celsius temperatures at 3 a.m.

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Polar bear tracks on sea ice.

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Storm battered basalt rocks along Admiralty Inlet.

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