Jordi Chias / Chinstrap penguin (Pygoscelis antarcticus) carcass after leopard seal attack, Antarctic Peninsula, Antarctica.

Jordi Chias / Chinstrap penguin (Pygoscelis antarcticus) with chicks, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguins (Pygoscelis papua) swimming together and porpoising in search of krill, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguins (Pygoscelis papua) porpoising, swimming together in search of krill, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguin (Pygoscelis papua) feeding chick, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguin (Pygoscelis papua) feeding chick, Antarctic Peninsula, Antarctica.

Jordi Chias / Leopard seal (Hydrurga leptonyx) predating a Gentoo penguin (Pygoscelis papua) Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguin (Pygoscelis papua) drinking water from melting ice, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguins (Pygoscelis papua) walking in line, returning to nesting area, Port Charcot, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguins (Pygoscelis papua) walking in line, returning to nesting area, Port Charcot, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguins (Pygoscelis papua) walking in line, returning to nesting area, Port Charcot, Antarctic Peninsula, Antarctica.

Jordi Chias / Gentoo penguin (Pygoscelis papua) with chick, Port Charcot, Antarctic Peninsula, Antarctica.Antarctic Peninsula, Antarctica.

Stefan Christmann / Adelie penguin (Pygoscelis adeliae) calling during courtship, Atka Bay, Queen Maud Land, Antarctica, December.

Stefan Christmann / Adelie penguin (Pygoscelis adeliae) nesting pair, Atka Bay, Queen Maud Land, Antarctica, December.

Benjamin Olson / Gentoo Penguin (Pygoscelis papua) wading, Antarctica

Benjamin Olson / Gentoo Penguin (Pygoscelis papua) wet from rain due to climate change, Antarctica

Tui De Roy / Gentoo Penguin (Pygoscelis papua) chicks chasing parent for food, Dunbar Island, Falkland Islands

Fred Olivier / Adelie penguins (Pygoscelis adeliae) swimming underneath sea ice, Antarctica.

Fred Olivier / Group of Adelie penguins (Pygoscelis adeliae) swimming in a tide crack, lots jump out, Adelie Land, Antarctica, January.

Fred Olivier / Wide angle shot of Adelie penguins (Pygoscelis adeliae) walking on sea ice, Adelie Land, Antarctica, January.

Fred Olivier / Group of Adelie penguins (Pygoscelis adeliae) destroying an egg with a chick inside, Adelie Land, Antarctica, January.

Fred Olivier / Adelie penguins (Pygoscelis adeliae) walking in front of a blue iceberg, Adelie Land, Antarctica, January.

Fred Olivier / Adelie penguin (Pygoscelis adeliae) stealing rock from another penguin for its nest, Adelie Land, Antarctica, January.

Fred Olivier / Chinstrap penguin (Pygoscelis antarcticus) moving a feather in its nest, Aitcho Island, South Shetland Islands.

Fred Olivier / Chinstrap penguin (Pygoscelis antarcticus) adding a stick to its nest and fighting with a neighbouring pair, Aitcho Island, South Shetland Islands.

Fred Olivier / Panning shot of a Chinstrap penguin (Pygoscelis antarcticus) breeding colony, Aitcho Island, South Shetland Islands.

Peter Bassett / Pair of Gentoo penguins (Pygoscelis papua) courting and attempting to mate, Neko Harbour, Andvord Bay, Graham Land, Antarctica.

Fred Olivier / Group of Adelie penguins (Pygoscelis adeliae) diving from the edge of the sea ice, Antarctica.

Fred Olivier / Pair of Adelie penguins (Pygoscelis adeliae) displaying to one another, Antarctica.

Fred Olivier / Group of Adelie penguins (Pygoscelis adeliae) walking away from the camera on sea ice at sunset, with one solitary penguin in the foreground, Antarctica.

Fred Olivier / Group of Adelie penguins (Pygoscelis adeliae) running and gathered on sea ice, Antarctica.

Fred Olivier / Adelie penguin (Pygoscelis adeliae) colony, with icebergs and pack ice in the background, Antarctica.

Fred Olivier / Adelie penguin (Pygoscelis adeliae) regurgitating food for its chick, Antarctica.

Fred Olivier / Hungry Adelie penguin (Pygoscelis adeliae) chick pecking at a rock before tucking into its parent to keep warm, with a dead chick in the foreground, Antarctica

Fred Olivier / Close-up of an Adelie penguin (Pygoscelis adeliae) with a chick begging for food and a dead chick nearby, Antarctica.

Fred Olivier / Adelie penguin (Pygoscelis adeliae) displaying in the middle of a colony, Antarctica.

Fred Olivier / Adelie penguin (Pygoscelis adeliae) lying down to incubate an egg, Antarctica.

Fred Olivier / Portrait of an Adelie penguin (Pygoscelis adeliae) chick, Antarctica.

Fred Olivier / Adelie penguins (Pygoscelis adeliae) diving, seen from underwater, Antarctica.

Ingo Arndt / Gentoo Penguin (Pygoscelis papua) sleeping on beach, Volunteer Point, Falkland Islands, March

Ingo Arndt / Gentoo Penguin (Pygoscelis papua) preening, Prion Island, South Georgia Island, February

Ingo Arndt / Gentoo penguin (Pygoscelis papua) calling, Stromness Bay, South Georgia Island, Southern Ocean, Antarctic Convergence.

Ingo Arndt / Gentoo penguins (Pygoscelis papua) walking to the beach, Stromness Bay, South Georgia Island, Southern Ocean, Antarctic Convergence. November

Michael Milicia/ BIA / Gentoo Penguin (Pygoscelis papua) group coming ashore, Sea Lion Island, Falkland Islands

Inaki Relanzon / Gentoo penguins (Pygoscelis papua) on the beach at sunset, Sea Lion Island, Falkland Islands.

Heike Odermatt / Gentoo Penguin (Pygoscelis papua), Falkland Islands

Charlie Summers / Adelie Penguin (Pygoscelis adeliae) carrying stolen rock from another nest in rookery, Peterman Island, Antarctica, November.

Jordi Chias / Atolla jellyfish (Atolla wyvillei) with Gentoo penguin (Pygoscelis papua) in the background near the surface. Antarctic Peninsula. Finalist in the Underwater category of the Wildlife Photographer of t...

Ole Jorgen Liodden / Gentoo penguin (Pygoscelis papua) alone on blue ice, Antarctica, March.

Fred Olivier / Adelie penguins (Pygoscelis adeliae) in front of French Icebreaker L'Astrolabe, on edge of the fast ice off Dumont D'Urville station, Antarctica. December 2014.

Tui De Roy / Adelie penguin (Pygoscelis adeliae) courtship behaviour. Prydz Bay, near Davis Station, Vestfold Hills, Ingrid Christensen Coast, East Antarctica, November.

Andy Rouse / Chinstrap penguin (Pygoscelis antarcticus) group on blue iceberg, Antarctica

Andy Rouse / Gentoo penguin (Pygoscelis papua) in sandstorm on beach, Saunders Island, Falkland Islands.

Andy Rouse / Gentoo penguin (Pygoscelis papua) walking on beach, Saunders Island, Falkland Islands.

Andy Rouse / Gentoo penguin (Pygoscelis papua) jumping onto beach, Carcass Island, Falkland Islands.

Fred Olivier / Adelie penguins (Pygoscelis adeliae) travelling to the ice edge to feed, Antarctica.

Fred Olivier / Adelie penguins (Pygoscelis adeliae) preening at edge of ice, Antarctica.

Fred Olivier / Adelie penguins (Pygoscelis adeliae) wide angle portrait of two with larger group in background, Antarctica.

Fred Olivier / Adelie penguin (Pygoscelis adeliae) group, Antarctica.

Bryan and Cherry Alexander / Chinstrap penguins (Pygoscelis antarctica) on a blue iceberg, with Antarctic Prion (Pachyptila desolata) flying over. Antarctica

Michael Pitts / Gentoo penguins (Pygoscelis papua) calling and defending their eggs from Southern Skua (Stercorarius antarcticus) hunting for unattended eggs or chicks, Sea Lion island, The Falklands, South Atlantic.

Kevin Schafer / Adelie Penguin (Pygoscelis adeliae) group jumping off iceberg, Brown Bluff, Antarctic Peninsula, Antarctica

Kevin Schafer / Gentoo Penguin (Pygoscelis papua) parent with chicks, Pleneau Island, Antarctic Peninsula, Antarctica

Kevin Schafer / Gentoo Penguin (Pygoscelis papua) male bringing stones to female with chicks, Pleneau Island, Antarctic Peninsula, Antarctica

Chris & Monique Fallows / Gentoo penguins (Pygoscelis papua) diving into the ocean, Antarctic peninsula, Antarctica.

Enrique Lopez-Tapia / Gentoo penguins (Pygoscelis papua) calling, Cuverville Island. Antarctic Peninsula, Antarctica

Enrique Lopez-Tapia,Enrique Lopez-Tapia / Gentoo penguin (Pygoscelis papua) and Antarctic cruise liner 'MV Ushuaia' in Neko Harbour, Andvord Bay. Antarctic Peninsula, Antarctica

Ben Cranke,Ben Cranke / Gentoo Penguin (Pygoscelis papua) nest amongst the buildings at Port Lockroy, Wiencke Island, Antarctic Peninsula, Antarctica

Ben Cranke,Ben Cranke / Gentoo Penguin (Pygoscelis papua) penguins rest on a floating iceberg, Antarctic Peninsula, Antarctica

Ben Cranke / Gentoo Penguin (Pygoscelis papua) nesting, Petermann Island, Antarctic Peninsula, Antarctica

Ben Cranke,Ben Cranke / Leopard seal (Hydrurga leptonyx) hunting Gentoo Penguin (Pygoscelis papua) into shore, Cuverville Island, Antarctic Peninsula, Antarctica

Ben Cranke / Leopard seal (Hydrurga leptonyx) chasing Gentoo Penguin (Pygoscelis papua) into shore, Cuverville Island, Antarctic Peninsula, Antarctica

Ben Cranke,Ben Cranke / Gentoo Penguin (Pygoscelis papua) jumping out of the sea, Cuverville Island, Antarctic Peninsula, Antarctica. Highly commended in the Single Species Portfolio of the Terre Sauvage Nature Images Awards...

Ben Cranke / Gentoo Penguin (Pygoscelis papua) jumping onto shore, Cuverville Island, Antarctic Peninsula, Antacrtica

Ben Cranke,Ben Cranke / Gentoo Penguin (Pygoscelis papua) coming in from the sea, Cuverville Island, Antarctic Peninsula, Antarctica

Ben Cranke / Gentoo Penguins (Pygoscelis papua) jumping across rocky shore, Cuverville Island, Antarctic Peninsula, Antarctica

Ben Cranke,Ben Cranke / Gentoo Penguin (Pygoscelis papua) group travelling out to sea, Cuverville Island, Antarctic Peninsula, Antarctica

Matthias Breiter / Gentoo Penguin (Pygoscelis papua) porpoising, Cuverville Island, Antarctic Peninsula, Antarctica

Matthias Breiter / Gentoo Penguin (Pygoscelis papua) surfacing, Gonzalez Videla Antarctic Base, Paradise Bay, Antarctic Peninsula, Antarctica

David Tipling / Chinstrap Penguins (Pygoscelis antarcticus) on blue iceberg, Antarctica

David Tipling / Gentoo Penguins (Pygoscelis papua) group walking, Sea Lion Island, Falklands, November

David Tipling / Gentoo Penguins (Pygoscelis papua) about to enter the sea, Brown Bluff Antarctic Peninsula, Antarctica, November

Jeff Vanuga / Gentoo Penguin (Pygoscelis papua) mating. Cuverville Island, Antarctica.

Ole Jorgen Liodden / Gentoo Penguin (Pygoscelis papua) chick in nesting area, Macquarie Island, Australia. November.

Mark Carwardine / Three Gentoo Penguins (Pygoscelis papua) standing at the edge of sea ice. Antarctic Peninsula, January. Book plate from Mark Carwardine's Ultimate Wildlife Experiences.

Mark Carwardine / Chinstrap Penguins (Pygoscelis antarcticus) standing on ice. South Shetland Islands, Antarctica, January. Book plate from Mark Carwardine's Ultimate Wildlife Experiences.

Brent Stephenson / Gentoo Penguin (Pygoscelis papua) with two large chicks. The chicks are begging to be fed by the adult. Petermann Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Gentoo Penguins (Pygoscelis papua) porpoising on the way back to the breeding colony. Port Lockroy, Antarctic Peninsula, Antarctica, January.

Mike Read / Gentoo penguin (Pygoscelis papua) standing on a sandy beach, Falkland Islands

Kathryn Jeffs / Tracks in snow of Adelie penguins (Pygoscelis adeliae) walking from coast to colony, Fish Island, Antarctica, February 2009, Taken on location for BBC Frozen Planet series

Kathryn Jeffs / Adelie penguins (Pygoscelis adeliae) on ice floe, Antarctica. Taken on location for BBC Frozen Planet series, January 2009

Kathryn Jeffs / Adelie penguins (Pygoscelis adeliae) on ice floe, Antarctica. Taken on location for BBC Frozen Planet series, January 2009

Bryan and Cherry Alexander / Gentoo penguin (Pygoscelis papua) seen from underneath, using feet as rudders. Living Coasts, Torquay, England, UK.

Bryan and Cherry Alexander / Adelie penguin (Pygoscelis adeliae) on snow bank at Prospect Point with the mountains of Renaud Island beyond. Antarctica.

Bryan and Cherry Alexander / Gentoo penguins (Pygoscelis papua) in blowing sand with the "Ocean Nova" anchored beyond. Saunders Island, Falkland Islands, 2009.

Bryan and Cherry Alexander / Gentoo penguin (Pygoscelis papua) standing on volcanic beach at Whalers Bay, with tourists in kayak beyond. Deception Island, South Shetland Islands, Antarctica, 2009.