Ernie Janes / Cley Beach with retreating wave patterns, after sunset, Norfolk, UK January

Mitsuaki Iwago / Retreating glacier, Antarctic coast facing the Ross Sea, Antarctica

Pete Oxford / D - Galapagos Giant tortoise portrait - Dome form {Geochelone elephantopus} retreating into shell. Darwin Research Station. Santa Cruz Is. Galapagos Islands, Ecuador. South America

Pete Oxford / Galapagos Giant tortoise close up portrait - dome form {Geochelone elephantopus} retreating into shell. Galapagos Is

Steven Kazlowski / Hoary marmot (Marmota caligata) adult overlooking Exit Glacier in Kenai Fjords National Park, South Central Alaska, USA

Steven Kazlowski / Chunks of Columbia Glacier, one of the fastest moving glaciers in the world, retreating since the early 1980s, litter the shore in Chugach National Forest, Prince William Sound, Alaska, USA. The Colum...

Steven Kazlowski / Scenic icy landscape view of Columbia Glacier, one of the fastest moving glaciers in the world, Chugach National Forest, Prince William Sound, Alaska, USA. The Columbia Glacier is now the single large...

Steven Kazlowski / Scenic icy landscape view of Columbia Glacier, one of the fastest moving glaciers in the world, Chugach National Forest, Prince William Sound, Alaska, USA. The Columbia Glacier is now the single large...

Bryan and Cherry Alexander / Retreating valley glacier leaves signs of previous advances and retreats in its series of moraines. Rypefjord, East Greenland, September 2005.

Anup Shah / Eastern White-bearded Wildebeest (Connochaetes taurinus) herd running towards the Mara River while Thomson's Gazelles (Eudorcas thomsonii) are retreating - wide angle perspective. Masai Mara National...

Graham Eaton / A 'glacial erratic' or boulder deposited by retreating ice, outside Cwm Idwal, Snowdonia National Park, Wales, January 2009

Georgette Douwma / Basket star (Astroboa nuda) commonly found at night with its rays fully extended into areas of current. It removes plankton from the water column by filter feeding. During the day it hides under coral...

Steven Kazlowski / Glacial landscape of Osbornebreen, a retreating glacier in St. Jonsfjord, west coast of Svalbard, Norway. July 2009

Steven Kazlowski / Cruise ship tourists hiking to Osbornebreen, a retreating glacier in St. Jonsfjord, west coast of Svalbard, Norway. July 2009

Sven Zacek / Retreating tide on beach, Baltic sea, Estonia,

Philippe Clement / Retreating glacier in the Mont Blanc Massif showing polished bedrock, Italy, July 2009

Philippe Clement / Retreating glacier in the Mont Blanc Massif showing moraine, Italy, July 2009

Philippe Clement / Retreating glacier in the Mont Blanc Massif showing polished bedrock, Italy, July 2009

Stephen Dalton / Scaffold web spider (Steotoda nobilis) retreating into burrow, UK

Stephen Dalton / Mouse spider {Herpillus blackwalli} retreating into electrical socket hole, UK

Philippe Clement / Glacial lake formed by the retreating Stein Glacier / Steingletscher, Urner Alps, Switzerland, July 2009

Ross Hoddinott / Sandymouth bay (National Trust) at low tide, Cornwall, UK, with pools in sand left by retreating tide

NEIL NIGHTINGALE / Aerial view of glacier at Sverdrup Pass, Ellesmere Island, Canadian Arctic. 1994.

Andrew Parkinson / Sea cockroaches retreating from advancing tide {Ligia dilatata} Cape of Good Hope, South Africa

RICHARD KIRBY / Concentration of spectacled caiman due to retreating water in dry season, Venezuelan Llanos

Colin Monteath / Retreating hanging glaciers from summit Cerro Cuyoc, Cordillera Huayhuash, Andes, Peru

Jim Brandenburg / Glacier runoff in valley carved by retreating glacier, Canada