Anup Shah / African fish eagle {Haliaeetus vocifer} defends Lesser flamingo carcass from Marabou storks {Leptoptilos crumeniferus}, Lake Nakuru, Kenya.

Anup Shah / African fish eagle {Haliaeetus vocifer} fighting Marabou storks {Leptoptilos crumeniferus} over Lesser flamingo carcass, Lake Nakuru, Kenya.

Doug Perrine / White spotted eagle ray from underneath {Aetobatus narinari} Caribbean Sea (Non-ex).

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.

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

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

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

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

Ismaele Tortella / White tailed eagle (Haliaeetus albicilla) catching fish, Lofoten, 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...

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...

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.

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

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.

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.

Jordi Chias / Giant Manta (Manta birostris) with Remoras (Remora brachyptera) attached to both wings, offshore Santa Maria Island, Azores, Atlantic Ocean

Jordi Chias / Giant Manta (Manta birostris) going overhead, Santa Maria Island, Azores, Atlantic Ocean

Jordi Chias / Mobula / Chilean devil ray (Mobula tarapacana) with remora (Remora brachyptera) and Amberjacks (Serila dumerilli) Santa Maria Island, Azores, Atlantic Ocean

Bence Mate / White tailed eagle (Haliaeetus albicilla) juvenile feeding on fish, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. February.

Bence Mate / Herring gull (Larus argentatus) mobbing White tailed sea eagle (Haliaeetus albicilla) with fish prey, Lake Csaj, Kiskunsagi National Park, Hungary. March.

Bence Mate / White tailed eagle (Haliaeetus albicilla) with fish in beak , Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Bence Mate / Gull mobbing White tailed sea eagle (Haliaeetus albicilla) with fish prey, Lake Csaj, Kiskunsagi National Park, Hungary. March.

Bence Mate / Juvenile White tailed sea eagles (Haliaeetus albicilla) fighting for fish in mid air, Lake Csaj, Kiskunsagi National Park, Hungary. February.

Bence Mate / White tailed eagle (Haliaeetus albicilla) juvenile feeding on fish, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. February.

Wim van den Heever / Steller's sea-eagle (Haliaeetus pelagicus) two fighting over fish watched by White tailed sea eagle (Haliaeetus albicilla) Hokkaido, Japan, February.

Wim van den Heever / White tailed sea eagle (Haliaeetus albicilla) feeding on fish on pack ice, Hokkaido, Japan, February.

Franco Banfi / Devilrays (Mobula tarapacana) two viewed from below, Ambrosio dive site, Santa Maria Island, Azores, Portugal, Atlantic Ocean.

Franco Banfi / Devilray (Mobula tarapacana) swimming near the surface with remoras, Ambrosio dive site, Santa Maria Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Devilrays (Mobula tarapacana) large group at the surface, Ambrosio dive site, Santa Maria Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Scuba diver with Devilray (Mobula tarapacana), Ambrosio dive site, Santa Maria Island, Azores, Portugal, Atlantic Ocean

Markus Varesvuo / White-tailed eagle (Haliaeetus albicilla) with two fish in talons, Norway, October.

Markus Varesvuo / Blakiston's Fish Owl (Ketupa blakistoni) perched, Hokkaido, Japan, February.

Claudio Contreras / Giant Manta Ray (Manta birostris) at cleaning station with Clarion Angelfish (Holacanthus clarionensis) San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve (The Socorro Islands), Pacific...

Claudio Contreras / Giant Manta Ray (Manta birostris), San Benedicto Island, Revillagigedo Archipelago Biosphere Reserve (Socorro Islands), Pacific Ocean, Western Mexico. Vulnerable species.

Lou Coetzer / African fish eagle (Haliaeetus vocifer) in flight with Catfish in claws, Chobe River, Botswana.

Eric Baccega / African fish eagle (Haliaeetus vocifer) fishing, Baringo lake, Kenya, Africa.

Michael Pitts / Giant manta ray (Manta birostris) swimming over a cleaning station, Maldives, Indian Ocean.

Bence Mate / White-tailed Eagle (Haliaeetus albicilla) with muddy fish slipping from its claws as it flies up from the water. Hungary. Highly commended in the Birds category, GDT Competition 2013

Michael Pitts / Devil rays (Mobula japonica) viewed from below, South Ari atoll, Maldives.

Franco Banfi / Manta ray (Manta birostris), San Benedicto, Revillagigedo (Socorro) Islands, Mexico, East Pacific Ocean

Franco Banfi / Scuba diver and Manta ray (Manta birostris), San Benedicto, Revillagigedo (Socorro) Islands, Mexico, East Pacific Ocean. Model released.

Jeff Rotman / Ocellated eagle ray (Aetobatus ocellatus), underside, Natal Coast, South Africa.