Shattil & Rozinski / Juvenile Swift fox (Vulpes velox) stalking prey on the shortgrass prairie of Southern Wyoming, Wyoming, USA

Shattil & Rozinski / Swift fox (Vulpes velox) running, backlit, Wyoming, USA

Juergen Freund / Humpback whale (Megaptera novaeangliae) turning underwater, off Tonga

Tim Laman / Californian sealions (Zalophus californianus), one with fishing wire caught round its neck. Monterey Bay, California.

Tim Laman / Scarlet ibis (Eudocimus ruber) and Snowy egret {Egretta thula} flying out from their mangrove roosting trees before sunrise in the Caroni Swamp, Caroni Bird Sanctuary, Trinidad.

Shattil & Rozinski / Broad tailed hummingbird {Selasphorus platycercus} hovering, USA

Bernard Castelein / Hover-fly flying {Syrphidae} Belgium

Eric Baccega / Giant otter (Pteronura brasiliensis) swimming, captive, from Pantanal, Brazil, IUCN Endangered

Shattil & Rozinski / Ferruginous hawks {Buteo regalis} fighting over Prairie dog kill, Colorado, USA

Kim Taylor / Green Woodpecker (Picus viridis) male flying through Beech woodland in spring, Surrey, UK. Digital composite

Richard Du Toit / Malachite sunbird {Nectarinia famosa} male feeding from flowers, South Western Cape, South Africa

Juergen Freund / Atlantic spotted dolphins {Stenella frontalis} riding on bow wave, Bahamas