Peter Cairns / 2020VISION / Silhouette of Rock ptarmigan (Lagopus mutus) perched on rock against winter sun, Cairngorms NP, Highlands, Scotland, UK, February. Photographer quote: 'At -20c and with fog rolling across the mountain...

Bryan and Cherry Alexander / Tundra Nenets boy posing with Arctic hare (Lepus arcticus) he has shot. Gydan Peninsula, Western Siberia, Russia, 2000.

Edwin Giesbers / Orang utan (Pongo pygmaeus) head portrait of dominant male called Aman. He is the first orangutan in the world to have his eye sight restored . Matang wildlife centre, Sarawak, Borneo, Malaysia, June...

Edwin Giesbers / Orang utan (Pongo pygmaeus) head portrait of dominant male called Aman. He is the first orangutan in the world to have had his cataracts operated on and his eye sight restored. Matang wildlife centre,...

Edwin Giesbers / Orang utan (Pongo pygmaeus) head portrait of dominant male called Aman. He is the first orangutan in the world to have had his cataracts operated on and his eye sight restored. Matang wildlife centre,...

Roger Powell / Great Bustard (Otis tarda) male in partial display as he walks through the communal lek, Castro Verde, Portugal, April

Bryan and Cherry Alexander / Polar bear (Ursus maritimus) getting covered in snow as he sleeps. Cape Churchill, Canada.

Sandesh Kadur / Boy proudly holding dying Blue whistling thrush (Myophonus caeruleus) that he has shot with a catapult, Cherrapunjee, Meghalaya, North East India. HIGHLY COMMENDED: One Earth Award - Wildlife Photogra...

Pete Oxford / Portrait of Bai Cormorant fisherman with three fishing Comorants perching on pole he carries. Erhai lake. Dali Yunnan Province. China. June 2006

Jane Burton / A playful tabby kitten pouncing on a West Highland White Terrier puppy as he pokes his head out from a Father Christmas hat.

Luciano Candisani / French Angelfish (Pomacanthus paru) pair, Rocas Atoll, Brazil

Flip Nicklin / Queen Angelfish (Holacanthus ciliaris) juvenile, Cocos Island, Costa Rica