Mike Read / Blackish oystercatcher (Haematopus ater) sitting on nest, Falkland Islands

Mike Read / South island oystercatcher (Haematopus finschi) standing on one leg on shoreline, South Island, New Zealand, December

Bernard Castelein / Common Eider (Somateria mollissima) female with chicks on beach, Helgoland, Germany, May

Juergen Freund / Restorff Island, the daily dive stop for lunch and dive surface interval at Walindi Plantation Resort. Papua New Guinea, May 2010

Juergen Freund / Aerial view of a dead hardwood tree by the sea. These trees once grew further inland in coastal lowland forest but are now on the coast as a result of rising sea levels, Philippines, May 2009.

Roberto Rinaldi / White Bay, Jost Van Dyke Island, British Virgin Islands (BVI)

Roberto Rinaldi / Palm trees on a deserted sandy beach with mountain beyond, Bora Bora, French Polynesia.

Roberto Rinaldi / Bora Bora Pearl Resort on the Bora Bora lagoon, French Polynesia.

Roberto Rinaldi / Beach close to Colonia on Yap Proper, Micronesia.

Roberto Rinaldi / White Bay on Jost Van Dyke Island (JV Dyke), also known as Barefoot Island, British Virgin Islands (BVI)

Bernard Castelein / North Berwick beach at low tide with seaweeds. Scotland UK. Bass rock in background.

Cheryl-Samantha Owen / West Coast Rock Lobster (Jasus lalandii) observed by diver. Kalk Bay, Atlantic Ocean, False Bay, Valsebaai, Western Cape, South Africa

Laurent Geslin / Landscape of mountains in winter, with walkers crossing peaks, in the Jura region, Switzerland. January 2009

Jerry Monkman / A man climbs "Top of the Prow" rock on Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009, Model released

Jerry Monkman / A man climbs "Top of the Prow" rock on Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009, Model released

Jerry Monkman / A man rock climbing near the top of Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009, Model released

Tim Laman / A young boy (model released) aged 9, hiking in the rainforest in Borneo. July 2007

Jerry Monkman / Man walking with his climbing gear at Lower Slab in Pawtuckaway State Park, New Hampshire, USA, September 2008. Model released.

Jerry Monkman / Man bouldering in "The Boulders" section of Pawtuckaway State Park, New Hampshire, USA, September 2008. Model released.

Jerry Monkman / Lone hiker at sunrise on the Bold Coast trail in Cutler, Maine, USA, June 2009. Model released

Jeff Vanuga / Snowmobiling in the Bridger - Teton National Forest on Togwotee Pass near Dubois, Wyoming. Model released, January 2009

Jeff Vanuga / Snowmobiling in the Bridger - Teton National Forest on Togwotee Pass near Dubois, Wyoming. Model released, January 2009

Michael Pitts / Diver on examining 6'' howitzer on the wreck of the S.S. Serrana. Sunk by UB-35 on the 23 January 1918. Eastern Solent, England, August 2013.