Ingo Arndt / Blue Crab (Discoplax hirtipes) with claws raised in defensive / aggressive posture, endemic to Christmas Island, Indian Ocean, Australian Territory

Ingo Arndt / Flock of Brambling (Fringilla montifringilla) perched at roosting tree, overwintering, Steiermark, Austria

Bence Mate / Great egrets (Ardea alba) and Grey heron (Ardea cinerea) squabbling over fish, with some in flight. Blurred motion photograph, Lake Csaj, Pusztaszer, Hungary. February.

Bruno D'Amicis / Fennec fox (Vulpes zerda) displayed in the market (souk), of a Tunisian town. This species is adapted to silence and solitude of the desert, this individual that had been caught as an adult showed cle...

Bruno D'Amicis / Fennec fox (Vulpes zerda) displayed in the market (souk), of a Tunisian town. This species is adapted to silence and solitude of the desert, this individual that had been caught as an adult showed cle...

Bence Mate / Greenfinches (Carduelis chloris) and House sparrows (Passer domesticus) blurred long exposure photograph, Hungary, February.

Doug Perrine / Reef manta rays (Manta alfredi formerly Manta birostris) vortex / cyclone feeding on plankton, Hanifaru Bay, Hanifaru Lagoon, Baa Atoll, Maldives, Indian Ocean, October

Anup Shah / Eastern White-bearded Wildebeest (Connochaetes taurinus) herd running - wide angle perspective, Masai Mara National Reserve, Kenya. October

Anup Shah / Eastern White-bearded Wildebeest (Connochaetes taurinus) herd running - wide angle perspective, Masai Mara National Reserve, Kenya. August 2009.

Anup Shah / Eastern White-bearded Wildebeest (Connochaetes taurinus) herd crossing the Mara River, close up of legs - wide angle perspective. Masai Mara National Reserve, Kenya. September 2009.

David Woodfall / Collection of European eels (Anguilla anguilla) bred as part of breeding project, to be exported to Lough Neagh in Northern Ireland. UK. May 2010

Andy Rouse / Large flock of Snow geese (Chen caerulescens) taking off, Bosque del Apache National Wildlife Refuge, New Mexico, USA