Pascal Kobeh / Young boy snorkeling at the surface above a coral reef with hard corals (Acropora et porites ) and a Sohal / Red Sea surgeonfish (Acanthurus sohal) and a Klunzinger wrasse (Thalassoma klunzigeri) Egy...

Michael Pitts / Maldives anemonefish (Amphiprion nigripes) and Surgeonfish (Acanthurus) swimming in a strong current, with moving anemones (Actiniaria), Maldives, Indian Ocean.

Alex Mustard / Sohal surgeonfish (Acanthurus sohal) swimming over piece of wreckage to defend its territory, Wreck of Kingston, Shag Rock, Egypt. Strait of Gubal, Red Sea.

Alex Mustard / Sohal surgeonfish / Arabian surgeonfish (Acanthurus sohal) displaying in front of a group of Scalefin anthias (Pseudanthias squamipinnis) on the wreck of the SS Kingston. Shag Rock, Egypt, Red Sea.

Georgette Douwma / RF - Tropical reef fish, composite image on black background, Bennets's toby / Bennet's sharpnose puffer (Canthigaster bennetti), Clown triggerfish (Balistoides conspicillum), Spectacled fi...

Pascal Kobeh / Young boy snorkeling at the surface above a coral reef with hard corals (Acropora et porites ) and a Sohal / Red Sea surgeonfish (Acanthurus sohal) and a Klunzinger wrasse (Thalassoma klunzigeri) Egy...

Michael Pitts / Maldives anemonefish (Amphiprion nigripes) and Surgeonfish (Acanthurus) swimming in a strong current, with moving anemones (Actiniaria), Maldives, Indian Ocean.

Alex Mustard / Sohal surgeonfish (Acanthurus sohal) swimming over piece of wreckage to defend its territory, Wreck of Kingston, Shag Rock, Egypt. Strait of Gubal, Red Sea.

Alex Mustard / Sohal surgeonfish / Arabian surgeonfish (Acanthurus sohal) displaying in front of a group of Scalefin anthias (Pseudanthias squamipinnis) on the wreck of the SS Kingston. Shag Rock, Egypt, Red Sea.

Georgette Douwma / RF - Tropical reef fish, composite image on black background, Bennets's toby / Bennet's sharpnose puffer (Canthigaster bennetti), Clown triggerfish (Balistoides conspicillum), Spectacled fi...

Uri Golman / Head portrait of photographer Uri Golman in temperatures of -40 degrees celsius, with frost in his beard. Greenland. March 2009. Model released

Danny Green / Reindeer (Rangifer tarandus) hunkering down in snow during blizzard. Svalbard, Norway, April.

Nick Garbutt / American bison (Bison bison) female covered in hoar frost near hot spring, portrait. Midway Geyser Basin, Yellowstone National Park, USA. February.

Oscar Dewhurst / Red Fox (Vulpes vulpes), hunting in the frost, London, UK. November

Marie Read / Loggerhead shrike (Lanius ludovicianus) on an ice-covered fence after an ice storm, Anahuac National Wildlife Refuge, Texas, USA. January.

Stefan Christmann / Drifts of snow around glacier, Atka Bay, Queen Maud Land, Antarctica. October 2017.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chicks lying down in the cold, Atka Bay, Queen Maud Land, Antarctica. October.

Markus Varesvuo / Black woodpecker (Dryocopus martius) male perched on tree trunk, trees covered in hoar frost. Kuusamo, Northern Ostrobothnia, Finland. February. Commended in the Birds in the Environment Category of t...

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) males in breeding colony huddling during winter storm. Atka Bay, Antarctica. July.

Sven Zacek / Sun dog over trees in frosty landscape. Tartumaa, Southern Estonia. December 2015.

Sven Zacek / White-tailed sea eagle (Haliaeetus albicilla) flying over frost and snow covered forest. Tartumaa, Southern Estonia. January 2011.

David Tipling / Fieldfare (Turdus pilaris) in garden in freezing weather with snow on the ground Norfolk, England, UK. february