Espen Bergersen / Common guillemot (Uria aalge) flock, circling outside the breeding colony at Hornoya birdcliff, Finnmark, Norway.

Denis-Huot / Masai giraffe (Giraffa cameleopardalis tippelskirchi) herd walking across savanna in dry season, Masai-Mara Game Reserve, Kenya

Denis-Huot / African elephant (Loxodonta africana) herd eating, Masai-Mara Game Reserve, Kenya

Erlend Haarberg / Arctic fox (Alopex lagopus) cubs looking curiously, Dovrefjell-Sunndalsfjella National Park, Norway, July.

Erlend Haarberg / Arctic fox (Alopex lagopus) cubs looking curiously, Dovrefjell-Sunndalsfjella National Park, Norway, July.

Chris & Monique Fallows / King penguin (Aptenodytes patagonicus) colony with storm approaching. Grytviken, South Georgia Island.

Kristel Richard / Band of wild Mongolian horses running on plains at the foot of Dungurukh Uul mountain, near the border with China and Kazakhstan, Bayan-Olgiy aymag, Mongolia. September.

Jussi Murtosaari / Goldeneye (Bucephala clangula) with chicks swimming behind, Helsinki, Uusimaa, Finland, May.

Marie Read / Flock of White ibis (Eudocimus albus) in breeding plumage, at rookery on water's edge of the mangrove-covered island, Tampa Bay, Florida, USA, March

Tui De Roy / Little blue / fairy penguin (Eudyptula minor) walking on pathway to nesting burrows, Neck Game Reserve, Bruny Island, Tasmania, Australia, December.

Constantinos Petrinos / Bigfin reef squid (Sepioteuthis lessoniana) schooling parallel to one another. Lembeh Strait, North Sulawesi, Indonesia.

Tui De Roy / Galapagos hawks (Buteo galapagoensis) in flight, Galapagos, Ecuador. Vulnerable species.