Neil Lucas / Jungle stream and rainforest, Daintree National Park, Queensland, Australia, December 2008

Kirkendall-Spring / Larch trees (Larix) in autumn colour at Larch Lake in the Alpine Lakes Wilderness. Washington, USA, October 2009

Sven Zacek / Panoramic view of moonrise over Lake Panorama, Estonia, Europe

Nick Garbutt / Blue iceberg off Spitsbergen, Svalbard, Arctic Norway, June 2009

Andy Rouse / Rays of light shining through storm clouds over Drake Passage, Antarctica, February 2006

David Tipling / Lenticular clouds over the mountains bordering Gold Harbour, South Georgia, November 2006

David Tipling / Cape / Pintado petrel (Daption capense) in flight low over water, Southern Ocean off Chile, November

Roy Mangersnes / Sunrise over the frozen Temple Fjord, West coast of Spitsbergen, Svalbard, Norway, March 2009

Eric Baccega / Crack in the pack ice, Manson Icefield peninsula and Jakeman glacier, Ellesmere Island, Nunavut, Canada, June 2012