Ben Cranke / African fish eagle (Haliaeetus vocifer) pressurises a Saddle-billed stork (Ephippiorhynchus senegalensis) into dropping a freshly caught fish, so that it can be stolen for a meal. Liuwa Plain National...

Mark Carwardine / Spinetail devil ray (Mobula mobular), four with rays of light and sparkle of sun on water, aerial view. Sea of Cortez, Baja California, Mexico. March.

Danny Green / Bald eagle (Haliaeetus leucocephalus), two perched on rocks in front of frozen waterfall. Alaska, USA, February.

Markus Varesvuo / White-tailed eagle (Haliaeetus albicilla) with backlit wings, and water spray, Norway, October

Ben Cranke / African fish eagle (Haliaeetus vocifer) attacking a female Saddle-billed Stork (Ephippiorhyncus senegalensis )trying to steal a fish it has just caught. Liuwa Plains National Park, Zambia

Jack Dykinga / Bald eagle (Haliaeetus leucocephalus) perched, Bosque del Apache National Wildlife Refuge, New Mexico, USA.

Franco Banfi / Bull ray (Pteromylaeus bovinus), South Tenerife, Canary Islands, Atlantic Ocean.

Franco Banfi / Bull ray (Pteromylaeus bovinus), South Tenerife, Canary Islands, Atlantic Ocean.

Klein & Hubert / Young Eagle hunter (Berkutchi) with his Golden eagle (Aquila chrysaetos) portrait, Altai, Mongolia. Model released.

Klein & Hubert / Young Eagle hunter (Berkutchi) with his Golden eagle (Aquila chrysaetos) portrait, Altai, Mongolia. Model released.

Klein & Hubert / Kazakh eagle hunter (Berkutchi) on horseback with his Golden eagle (Aquila chrysaetos) Altai, Mongolia. Model released.

Shane Gross / Spotted eagle rays (Aetobatus narinari) through a large window on the wreck of the former mine sweeper C-56 Juan Escutia. Cancun, Mexico.

Markus Varesvuo / Golden eagle (Aquila chrysaetus), Kuusamo, Finland, January.

Markus Varesvuo / Golden eagle (Aquila chrysaetus) landing in snow, Kuusamo, Finland, December..

Markus Varesvuo / White-tailed eagle (Haliaeetus albicilla) Norway, November.

Markus Varesvuo / White-tailed eagle (Haliaeetus albicilla) taking off with fish prey, Norway, August.

Alex Mustard / Reef manta (Mobula alfredi) visiting a cleaning station on a coral reef with a school of Onespot snappers (Lutjanus monostigma), Oriental sweetlips (Plectorhinchus vittatus) and Sabre squirrelfish (Sa...

Jack Dykinga / Bald eagle (Haliaeetus leucocephalus) perched as Snow geese (Chen caerulescens) fly by, Bosque del Apache National Wildlife Refuge, New Mexico, USA, January.

Staffan Widstrand / Tawny eagle (Aquila rapax) in flight, about to land, Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

SCOTLAND: The Big Picture / Golden eagle (Aquila chrysaetos) adult with nest material on eyrie with chick showing background, Isle of Lewis, Scotland, UK., May.

David Pattyn / Golden eagle (Aquila chrysaetos) in flight in front of a vertical rocky mountain side, Gran Paradiso National Park, Aosta Valley, Italy, May

Staffan Widstrand / Golden eagle (Aquila chrysaetos) perched in snow covered tree. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight over snow. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Ernie Janes / Bald eagle (Haliaeetus leucocephalus) portrait, captive, occurs in North America.

Franco Banfi / School of Munk's devil ray, pygmy devil ray, (Mobula munkiana), feeding on plankton at night, photographed on a long exposure, Espiritu Santo Island, Sea of Cortez, Baja California, Mexico, East Pacif...

Pal Hermansen / Golden eagle (Aquila crysaetos) on dead Fox (Vulpes vulpes) carcass. Trondelag, Norway. March. Remote camera shot

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

Ann & Steve Toon / Spotted eagle owl (Bubo africanus) subadult at nigh by water, Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Mark Carwardine / Munk's pygmy devil ray / Munk's mobula (Mobula munkiana) large school from the air with one leaping out of the water, Baja California, Mexico

Mark Carwardine / Munk's pygmy devil ray / Munk's mobula (Mobula munkiana) large school from the air, Baja California, Mexico.

Danny Green / Bald eagle (Haliaeetus leucocephalus) in flight, Alaska, USA, February

Danny Green / Bald eagle (Haliaeetus leucocephalus) head portrait, Alaska, USA, February

Danny Green / Bald eagle (Haliaeetus leucocephalus) in flight, Alaska, USA, February

Guy Edwardes / African fish eagle (Haliaeetus vocifer), Savuti, Botswana.

Markus Varesvuo / Golden eagle (Aquila chrysaetus) landing, Kuusamo, Finland, January.

Markus Varesvuo / Golden eagle (Aquila chrysaetus) Kuusamo, Finland, January.

Jordi Chias / Spotted eagle ray (Aetobatus narinari) school, Kagi kandhu, ;North Male Atoll, Maldives, Indian Ocean.

Michel Roggo / View of African fish eagle (Haliaeetus vocifer),from underwater, trying to catch a fish on the surface, Okavango Delta, Botswana, June. Photographed for The Freshwater Project

Ann & Steve Toon / African fish eagle (Haliaeetus vocifer) flying, Zimanga Private Game Reserve, KwaZulu-Natal, South Africa.

SCOTLAND: The Big Picture / Golden eagle (Aquila chyrsaetos) female flying into nest site with small branch, Glen Tanar Estate, Cairngorms National Park, Scotland, UK, June.

Neil Aldridge / African fish eagle (Haliaeetus vocifer) flying, Selinda Spillway, northern Botswana.

Neil Aldridge / African fish eagle (Haliaeetus vocifer) standing on the banks of the Chobe River, Chobe National Park, Botswana.

Neil Aldridge / Portrait of an adult Spotted eagle owl (Bubo africanus) Table Mountain National Park, South Africa.