Georgette Douwma / Yellowbar angelfish (Pomacanthus maculosus) swimming over coral reef with soft corals. Egypt, Red Sea.

Georgette Douwma / Emperor angelfish (Pomacanthus imperator) with soft corals and sweepers. Egypt, Red Sea.

Alex Mustard / Caribbean spiny lobster (Panulirus argus) scampers across a coral reef amongst sponges, Bloody Bay Wall, Little Cayman, Cayman Islands. British West Indies, Caribbean Sea.

Alex Mustard / Glasseye snapper (Heteropriacanthus cruentatus) head portrait with a cleaning Goby (Gobiosoma genie) East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Pete Oxford / Red Mangrove (Rhizophora mangle) and fish. Sian Ka'an Biosphere Reserve, Quintana Roo, Yucatan Peninsula, Mexico.

Jeff Rotman / Mattanza fishermen landing Giant Bluefun tuna (Thunnus thynnus) using a technique in which a maze of nets are set, leading to a central pool, Favignana, Italy, May / June Model released.

Jeff Rotman / Mattanza fishermen landing Giant Bluefun tuna (Thunnus thynnus) using a technique in which a maze of nets are set, leading to a central pool, Favignana, Italy, May / June Model released.

Jeff Rotman / Mattanza fishermen landing Giant Bluefun tuna (Thunnus thynnus) using a technique in which a maze of nets are set, leading to a central pool, Favignana, Italy, May / June 1990

Juergen Freund / Elephant ear sponge (Ianthella basta) with a Triplefin blenny resting on it, West New Britain, Papua New Guinea.

Juergen Freund / Hook and line fishermen in dugout canoe and self made goggles catching a coral grouper for growing on in cage for the Live reef fish trade, Wakatobi, South Sulawesi, Indonesia

Juergen Freund / Diver observing Coral razor / Shrimp fish (Aeoliscus strigatus) camouflaged amongst whip coral on coral reef, North Sulawesi, Indonesia. Model released.

Juergen Freund / Lunar tailed rock cod / Coronation grouper (Variola louti) swimming fast over coral reef, Bali, Indonesia

Juergen Freund / Convict blennies / False catfish, juvenile, (Pholidichthys leucotaenia) amidst a fan coral. Misool, Raja Ampat, West Papua, Indonesia,

Juergen Freund / Denise's pygmy seahorse (Hippocampus denise) in its fan coral. Misool, Raja Ampat, West Papua, Indonesia

Juergen Freund / Denise's pygmy seahorse (Hippocampus denise) in its fan coral. Misool, Raja Ampat, West Papua, Indonesia,

Alex Mustard / A Pygmy Seahorse (Hippocampus bargibanti) camouflaged in red Seafan (Muricella sp.). Pygmy Seahorses are small, most less than 15mm in length. Tulamben, Bali, Indonesia, October.

Juergen Freund / Variegated / Common lizardfish (Synodus variegatus) portrait. North Raja Ampat, West Papua, Indonesia

Sergey Gorshkov / Kamchatka Brown bear (Ursus arctos beringianus) catching salmon in river, Kamchatka, Far east Russia, August

Sergey Gorshkov / Sockeye salmon (Oncorhynchus nerka) spawning, Lake Kuril, Kamchatka, Far East Russia, July

Sue Flood / Bluefin tuna {Thunnus thynnus} captive in fish farm, Japan, 2000

Jeff Rotman / Klunzinger's wrasse (Thalassoma rueppellii / klunzingeri) swimming past diver, Sinai Peninsula, Red Sea, Egypt. Model released. Model released.

Floris van Breugel / Kokanee Salmon (Oncorhynchus nerka) on Autumn migration up Taylor Creek from Lake Tahoe, California, USA.

Alex Mustard / Caribbean reef shark (Carcharhinus perezi) swims over a coral reef. Grand Bahama Island, Bahamas. Tropical West Atlantic Ocean.

Tim Laman / Lionfish (Pterois) hovering in a Sea Fan in a view looking toward the surface of the water. Misool Island vicinity. Near smaller island of Fiabacet. West Papua, Indonesia, April 2007

Michel Roggo / Goldfish (Carassius auratus) Europe

Michel Roggo / Sockeye / Red Salmon (Oncorhynchus nerka), males at spawning ground, Adams river, British Columbia, Canada 2006

Jeff Rotman / Close-up of the eye of a Jewel Grouper / Coral hind (Cephalopholis Miniata) Red Sea, Egypt

Jeff Rotman / Jewel Grouper / Coral hind (Cephalopholis Miniata) with mouth open, Red Sea, Egypt

Jeff Rotman / Close up of Goggle eye / Bigeye fish (Priacanthus hamrur) Red Sea, Egypt

Georgette Douwma / Coral reef scenery with Gorgonian and shoal of Pygmy / Glassy sweepers (Parapriacanthus guentheri) Egypt, Red Sea

Wild Wonders of Europe / Lundgren / Scorpionfish (Scorpaena maderensis) portrait, Pico, Azores, Portugal, June 2009

Wild Wonders of Europe / Zankl / Atlantic bluefin tuna (Thunnus thynnus) shoal, captive, Malta, Mediteranean, May 2009 WWE BOOK & OUTDOOR EXHIBITION. PRESS IMAGE.

Wild Wonders of Europe / Zankl / Atlantic bluefin tuna (Thunnus thynnus) portrait, captive, Malta, Mediteranean, May 2009 WWE BOOK

Roger Powell / Black Guillemot {Cepphus grylle} with Sandeel fish in beak trying to entice a female to his nest site, Caithness, Scotland, UK

Wild Wonders of Europe / Zankl / Atlantic bluefin tuna (Thunnus thynnus) shoal, captive, Malta, Mediteranean, May 2009

Wild Wonders of Europe / Zankl / Atlantic bluefin tuna (Thunnus thynnus) shoal, captive, Malta, Mediteranean, May 2009. WWE INDOOR EXHIBITION

Wild Wonders of Europe / Zankl / Atlantic bluefin tuna (Thunnus thynnus) captive, Malta, Mediteranean, May 2009

Wild Wonders of Europe / Zankl / Atlantic bluefin tuna (Thunnus thynnus) portrait, captive, Malta, Mediteranean, May 2009

Tim Laman / Split level of roots of Red mangrove {Rhizophora mangle} supporting rich invertebrate life, Brain coral and Silversides fish in the Belize Cays, Tunicate Cove, Belize.

Georgette Douwma / Red Sea bannerfish (Heniochus intermedius) pair at rest near firecoral and soft corals. Red Sea, Egypt.

Georgette Douwma / Red Sea bannerfish (Heniochus intermedius) large school with soft corals. Egypt, Red Sea

Georgette Douwma / Emperor angelfish (Pomacanthus imperator). Red Sea, Egypt.

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on wreck. Note colour change from deep red to silver. Egypt, Red Sea

Georgette Douwma / Red soldierfish (Myripristis murdjan) being cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus), Andaman Sea, Thailand

Solvin Zankl / Deep Sea Viperfish {Chauliodus sloani} with chromatophores and bioluminescence, Atlantic ocean

Georgette Douwma / Red Sea bannerfish (Heniochus intermedius) amongst corals. Red Sea, Egypt

Georgette Douwma / Yellowbar angelfish (Pomacanthus maculosus) predating a common / moon jellyfish (Aurelia aurita). Red Sea, Egypt

Dan Burton / Bluefin tuna {Thunnus thynnus} in fish farm, Kusimoto, South Japan

Jeff Rotman / Lyretail Hogfish (Bodianus anthioides) sleeping in sponge at night. Egypt, Red Sea.

Jeff Rotman / Bullethead Parrotfish (Scarus sordidus) portrait at night. Egypt, Red Sea.

Peter Scoones / Red bellied piranha (Serrasalmus / Pygocentrus nattereri) pantanal wetlands, Brazil. photographed during making of BBC Planet Earth series 2005

Michael Pitts / Shoal of Hawaiian squirrelfish {Sargocentron xantherythrum}, Midway Islands, Pacific

Constantinos Petrinos / Blue triggerfish {Pseudobalistes fuscus} with Cleaner fish Red Sea

Flip Nicklin / Squirrelfish (Holocentrus sp) schooling at reef, Cocos Island, Costa Rica

Flip Nicklin / Squirrelfish (Holocentrus sp) schooling at reef, Cocos Island, Costa Rica

Chris Newbert / Rosy-lipped Batfish (Ogcocephalus sp) portrait, 100 feet deep, Cocos Island, Costa Rica

Birgitte Wilms / Rosy-lipped Batfish (Ogcocephalus porrectus), Cocos Island, Costa Rica

David Shale / Shoal of Red piranha {Serrasalmus nattereri} Santarem, Brazil

Martha Holmes / Bluefin tuna {Thunnus thynnus} Kushimoto Tuna Farm Japan. Bluefin tuna can swim at speeds of 50mph - they would win a silver swimming medal in an animal olympics competition.

Georgette Douwma / Crown of thorns starfish and butterflyfish on coral reef, Red Sea, Egypt.

Georgette Douwma / Coral reef landscape. Shallow reef with Anthias and wave. Red Sea, Egypt, North-Africa

Georgette Douwma / Lionfish (Pterois miles) swimming by shipwreck. Red Sea, Egypt

Francis Abbott / Blackspotted Sweetlips, Red Sea.

Georgette Douwma / Longnose hawkfish on coral, Red Sea.

Larry Michael / Domestic cat investigating goldfish bowl, USA

Georgette Douwma / Coral reef scenery with orange Scalefin anthias fish {Pseudanthias squamipinnis} Red Sea, Eygpt

Georgette Douwma / Two Golden / Masked butterflyfish, Red Sea, Eygpt

Sue Flood / Giant bluefin tuna {Thunnus thynnus} caught on long line and then attacked by Killer whale

Juergen Freund / Lionfish on coral reef, Indo-Pacific

Sue Daly / Red Gurnard (Aspitrigla / Chelidonichthys cuculus). Les Dents, Sark, British Channel Islands, July.

Sue Daly / Red Gurnard (Aspitrigla / Chelidonichthys cuculus). Les Dents, Sark, British Channel Islands, July.

Sue Daly / Red Gurnard (Aspitrigla / Chelidonichthys cuculus). Les Dents, Sark, British Channel Islands, July.

Sue Daly / Red Gurnard (Aspitrigla / Chelidonichthys cuculus). Les Dents, Sark, British Channel Islands, July.

Sue Daly / Red Gurnard (Aspitrigla / Chelidonichthys cuculus) Les Dents, Sark, British Channel Islands, July.

Sue Daly / Red Mullet (Mullus surmuletus). Maseline Harbour, Sark, British Channel Islands, September.

Steven Kazlowski / Sockeye salmon (Oncorhynchus nerka) adult swims upstream to spawn, interior of Alaska, USA

Georgette Douwma / Coral reef scenery with soft corals (Dendronephthya sp) and dense shoal of Pygmy sweepers (Parapriacanthus guentheri). Egypt, Red Sea.

Georgette Douwma / Coral reef scenery with soft corals (Dendronephthya sp) and dense shoal of Pygmy sweepers (Parapriacanthus guentheri). Egypt, Red Sea.

Georgette Douwma / Steep headed parrotfish (Scarus gibbus), feeding male followed by a Chequerboard wrasse (Halichoeres hortulanus). Egypt, Red Sea.

Georgette Douwma / Steep headed parrotfish (Scarus gibbus), feeding male followed by a Chequerboard wrasse (Halichoeres hortulanus). Egypt, Red Sea.

Georgette Douwma / Red Sea bannerfish (Heniochus intermedius) sheltering behind fire coral (Millepora dichotoma). Egypt, Red Sea. Species endemic to the Redsea.

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on coral reef. Egypt, Red Sea.

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on coral reef. Egypt, Red Sea.

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on coral reef. Egypt, Red Sea.

Will Watson / Wild reverted form of Domestic goldfish (Carassius auratus) captive, Herefordshire, England, UK, April

Sue Daly / Red sea fingers (Alcyonium glomeratum) soft coral on rocks, Channel Islands, UK July

Claudio Contreras / Sally Lightfoot Crab (Grapsus grapsus) feeding on caught fish. San Juanito Islet, Islas Marias Biosphere Reserve, Sea of Cortez (Gulf of California), Mexico, October.

Alex Mustard / Red clingfish (Arcos rubiginosus) pair blend in with their host, a deepwater sea fan (Iciligorgia nodulifera) East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / 2020VISION / Lumpsucker (Cyclopterus lumpus) colourful male guarding a clutch of eggs, St Abbs reserve, Berwickshire, Scotland, UK, North Sea, April

Shibai Xiao / Mangrove red snapper (Lutjanus Argentimaculatus) captrive underwater with two fisherman on bank looking down into water, Hainan Island, South China Sea, China. No release available.

MYN / Paul Marcellini / Short bigeye (Pristigenys alta) juvenile, Biscayne National Park, Florida, USA, January. meetyourneighbours.net project

Claudio Contreras / Longspine Squirrelfish (Holocentrus rufus). Cancun National Park, Caribbean Sea, Mexico.

Brent Stephenson / Adelie penguin (Pygoscelis adeliae) feeding one of its chicks a meal of krill, Yalour Islands, Antarctic Peninsula, Antarctica, December.

Alex Mustard / A bustling coral reef scene with sponges (Agelas conifera; Amphimedon compressa) soft and hard corals and a school of Creole wrasse (Clepticus parrae) East End, Grand Cayman, Cayman Islands, British W...

Alex Mustard / Red clingfish (Arcos rubiginosus) living on a deepwater sea fan (Iciligorgia nodulifera) on the reef wall, East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / Nassau grouper (Epinephelus striatus) hovering above red sponges on a Bahamian coral reef, Little Bahama Bank, The Bahamas, Caribbean Sea.