David Fleetham / False killer whale (Pseudorca crassidens) just below surface exhaling as it breaks the surface. Maui, Hawaii.

Claudio Contreras / American crocodile (Crocodylus acutus) exhaling bubbles underwater, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico, May.

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice and exhaling air, with scuba diver in background, Arctic circle Dive Center, White Sea, Karelia, northern Russia, captive

Ole Jorgen Liodden / Blue Whale (Balaenoptera musculus) blowing, with Black-legged Kittiwake (Rissa tridactyla) in the water spray. Spitsbergen, Svalbard, August. Runner up in the Birds category of GDT competition 2014.

Wild Wonders of Europe / E. Haarberg / Black grouse (Tetrao tertrix) male portrait, exhaling warm air on a cold morning, Bergslagen, Sweden, April 2009

Sergio Hanquet / Bryde's whale (Balaenoptera brydei) blowing, exhaling water and air from blowhole, in coastal waters. Tenerife, Canary Islands.

Sergio Hanquet / Bryde's whale (Balaenoptera brydei) blowing, exhaling air and water spray from blowhole. Tenerife, Canary Islands.

Sergio Hanquet / Bryde's whale (Balaenoptera brydei) blowing, exhaling air and water spray from blowhole. Tenerife, Canary Islands.

Sergio Hanquet / Bryde's whale (Balaenoptera brydei) blowing, exhaling air and spray from blowhole in coastal waters. Montana de Guaza, Tenerife, Canary Islands.

Doc White / Risso's dolphin (Grampus griseus) female and calf aged two days, swimming at surface, exhaling. California, USA.

Oscar Dewhurst / Red deer (Cervus elaphus) stag in misty conditions bellowing whilst sat down in long grass with the rising sun in the background. Richmond Park, London, UK. September

Tony Heald / Southern elephant seal (Mirounga leonina), male exhaling in water. St Andrews Bay, South Georgia. October.