Stefan Christmann / Emperor penguin (Aptenodytes forsteri) breeding colony, mainly males brooding eggs, huddled together on sea ice. Atka Bay, Antarctica. June.
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Sven Zacek,Sven Zacek / Dawn over frozen Lake Peipsi, with sheet ice formations caused by strong wind. Eastern Estonia, December 2012.
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Sven Zacek,Sven Zacek / Ice sheets before sunrise in Estonia. December 2009.
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Martha Holmes / Edge of large piece of ice sheet drifting in sea. Antarctic Peninsula. February 2008.
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David Woodfall / Aerial view of pancake ice sheet cracking and melting in Hudson Bay, Manitoba, Canada, December 2004
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Mark Brownlow / Mark Brownlow, producer of Freshwater programme for BBC Planet Earth series, behind ice sheet, on location at Lake Baikal, world's deepest and oldest (and largest by volume) freshwater lake, Siberia,...
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Stefan Christmann / Nilas, a thin sheet of ice created as the sea ice starts to form, in evening light. Scratch marks visible where sheet has moved on top of adjacent sheet. Atka Bay, Antarctica. March.
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Ashley Cooper / Clear water from Dettifoss waterfall mixing with glacial meltwater of River Jokulsa a Fjollum from the Vatnajokull ice sheet. Iceland, September 2010
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Ashley Cooper / Passenger from an Antarctic cruise ship amongst coastal scenery beneath Mount Walker, Paradise Bay off Graham Land on the Antarctic Peninsula.
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Ashley Cooper / Tourists on beach with Mountain peaks on Joinville Island, Antarctic Peninsula.
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Ashley Cooper / Gentoo penguins (Pygoscelis papua) with members of an expedition cruise ship. Curverville Island, Antarctic Peninsula.
