Gary Bell/ Oceanwide / Scarlet Cleaner Shrimp (Lysmata amboinensis) cleaning mouth of Tomato Grouper (Cephalopholis sonnerati), Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Scarlet Cleaner Shrimp (Lysmata amboinensis) cleaning mouth of Tomato Grouper (Cephalopholis sonnerati), Great Barrier Reef, Australia

Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016. COP26 Countdown Photo Competi...

John Chan / California sea lion (Zalophus californianus) feeding on a Striped bass (Morone saxatilis), Southern California, USA.

Tony Wu / Twinspot snapper (Lutjanus bohar) shoal rushing up to spawn, releasing a cloud of milky white sperm and eggs in the water column. Caroline Islands, Palau, November.

Tony Wu / Twinspot snapper (Lutjanus bohar) engaged in a mass spawning aggregation early in the morning. Caroline Islands, Palau. April. Winner of Underwater category, Wildlife Photographer of the Year 2016.

Alex Mustard / Portrait of pair of Bohar snappers (Lutjanus bohar) in their spawning aggregation. Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Alex Mustard / Portrait of Bohar snappers (Lutjanus bohar) in its spawning aggregation. Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Wild Wonders of Europe / Banfi / Comber (Serranus cabrilla) looking out of hole, Larvotto Marine Reserve, Monaco, Mediterranean Sea, July 2009

Wild Wonders of Europe / Banfi / One of the deeper artificial reefs surraunded by Damselfish (Chromis chromis) with a Comber (Serranus cabrilla) in the middle, Larvotto Marine Reserve, Monaco, Mediterranean Sea, July 2009

Kim Taylor / Sea bass {Dicentrarchus labrax} portrait. Captive.

Fred Bavendam / Scarlet Cleaner Shrimp (Lysmata amboinensis) working on a Tomato Grouper (Cephalopholis sonnerati), Milne Bay, Papua New Guinea

Gary Bell/ Oceanwide / Blue-streaked Cleaner Wrasse (Labroides dimidiatus) cleaning mouth and gills of Tomato Grouper (Cephalopholis sonnerati), Great Barrier Reef, Australia

Doug Gimesy / Little blue penguin (Eudyptula minor) raft swimming back to nests on St Kilda breakwater. Melbourne, Victoria, Australia. December 2016.

Doug Gimesy / A little penguin (Eudyptula minor) swimming home at dus towards his/her burrow on St Kilda breakwater. December, 2016. St Kilda breakwater, St Kilda, Victoria, Australia. Cropped.

Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016.

Doug Gimesy / Earthcare St Kilda volunteer picking up litter from rocks around Little penguin (Eudyptula minor) breeding colony. St Kilda breakwater, Melbourne, Victoria, Australia. February 2018. Model released.

Doug Gimesy / Little penguin (Eudyptula minor) standing on rocks of St Kilda breakwater, returning to nest at dusk. Melbourne city in background. Victoria, Australia. December 2016.

Doug Gimesy / Little blue penguin (Eudyptula minor) on St Kilda breakwater, lights of Melbourne in background. Victoria, Australia. November 2016.

Doug Gimesy / Little blue penguins (Eudyptula minor), two standing on rocks of St Kilda breakwater. Melbourne city lights in the background. Victoria, Australia. December 2016.

Doug Gimesy / St Kilda breakwater, location of Little penguin (Eudyptula minor) colony. Royal Melbourne Yacht Squadron marina with city skyline beyond. Melbourne, Victoria, Australia. 2018.

John Chan / California sea lion (Zalophus californianus) feeding on a Striped bass (Morone saxatilis), Southern California, USA.

John Chan / California sea lion (Zalophus californianus) feeding on a Striped bass (Morone saxatilis), Southern California, USA.

David Fleetham / Giant sea bass (Stereolepis gigas), Catalina Island, California.

David Fleetham / Giant / black sea bass (Stereolepis gigas) off Catalina Island, California, East Pacific Ocean.

Jordi Chias / Potato cod (Epinephelus tukula) with school Blueline snappers (Lutjanus kasmira) Tofo Coast, Mozambique, Indian Ocean. South-East Coast.

Claudio Contreras / Kelp bass / Rock sea bass (Paralabrax clathratus) and Giant kelp (Macrocystis pyrifera), Cedros Island, Pacific Ocean, Baja California, Mexico, May

Claudio Contreras / Kelp bass / Rock sea bass (Paralabrax clathratus) and Giant Kelp (Macrocystis pyrifera), Cedros Island, Pacific Ocean, Baja California, Mexico, May

Claudio Contreras / Kelp bass / Rock sea bass (Paralabrax clathratus) and Giant kelp (Macrocystis pyrifera) forest, San Benitos Islands, Baja California Pacific Islands Biosphere Reserve, Baja California, Mexico, May

Claudio Contreras / Kelp bass / Rock sea bass (Paralabrax clathratus) and Giant kelp (Macrocystis pyrifera) forest, San Benitos Islands, Baja California Pacific Islands Biosphere Reserve, Baja California, Mexico, May

Claudio Contreras / Kelp bass / Rock sea bass (Paralabrax clathratus) and Giant Kelp (Macrocystis pyrifera) forest, San Benitos Islands, Baja California Pacific Islands Biosphere Reserve, Baja California, Mexico, May

Claudio Contreras / Goldspotted sand bass (Paralabrax auroguttatus), Angel de la Guarda Island Protected Area, Gulf of California (Sea of Cortez), Mexico, July

Alex Mustard / School of Bohar snapper (Lutjanus bohar) swimming in formation along a coral reef. These fish are usually solitary and aggregate each summer in the Red Sea to spawn. Ras Mohammed National Park, Sinai...

Alex Mustard / School of Bohar snapper (Lutjanus bohar) in open water above a coral reef. These fish are usually solitary and aggregate each summer in the Red Sea to spawn. Shark Reef, Ras Mohammed, Sinai, Egypt. Re...

Alex Mustard / School of Bohar snapper (Lutjanus bohar) in open water close to a coral reef. These fish are usually solitary and aggregate each summer in the Red Sea to spawn. Shark Reef, Ras Mohammed, Sinai, Egypt....

Alex Mustard / School of Bohar snapper (Lutjanus bohar) in open water close to a coral reef. Shark Reef, Ras Mohammed, Sinai, Egypt. Red Sea.

Alex Mustard / School of Bohar snapper (Lutjanus bohar) close to a coral reef. These fish are usually solitary and aggregate each summer in the Red Sea to spawn. Shark Reef, Ras Mohammed, Sinai, Egypt. Red Sea.

Nature Production / Tomato grouper (Cephalopholis sonnerati), Chichijima, Ogasawara Islands UNESCO World Heritage Site, Japan

Sue Daly / Bass Dicentrachus labrax, Wide angle, shoal swims by, 2013 , Sark, British Channel Islands, UK,

Sue Daly / Shoal of Bass (Dicentrachus labrax), Sark, British Channel Islands, UK, August.

Graham Eaton / Angler fishing at dusk in sea surf. Bass (Dicentrarchus labrax) are often caught as they hunt for food churned up by waves, Porth Ceiriad, Pwllheli, Gwynedd, Wales, UK, December 2016.

Graham Eaton / Angler fishing at dusk in sea surf. Bass (Dicentrarchus labrax) are often caught as they hunt for food churned up by waves, Porth Ceiriad, Pwllheli, Gwynedd, Wales, UK, December 2016.

Alex Mustard / Bohar snappers (Lutjanus bohar) breaking up into smaller groups to spawn close to full moon. The fish swim short arches above the main group as they release clouds of gametes (eggs from the female, sp...

Alex Mustard / Large school of Bohar snappers (Lutjanus bohar) swimming in a tight, fast moving circular school over the reef, just before swimming into open water to spawn. Shark City, Ulong, Rock Islands, Palau. T...

Alex Mustard / Bohar snappers (Lutjanus bohar) breaking up into smaller groups to spawn close to full moon. The fish swim short arches above the main group as they release clouds of gametes (eggs from the female, sp...

Alex Mustard / Bohar snappers (Lutjanus bohar) breaking up into smaller groups to spawn close to full moon. The fish swim short arches above the main group as they release clouds of gametes (eggs from the female, sp...

Alex Mustard / Bohar snapper (Lutjanus bohar) school at Ras Mohammed, Shark Reef, Ras Mohammed, Sinai, Egypt. Red Sea.

Pascal Kobeh / Red snappers / Two-spot red snappers (Lutjanus bohar) mass shoal of fish spawning, Palau, Philippine Sea. A few black and white snappers (Macolor niger) have crawled into the school to eat the eggs.

Jean E. Roche / European seabass (Dicentrarchus labrax), caught by fisherman, Provence, France, April.

Alex Mustard / School of Bohar snappers (Lutjanus bohar) above a coral reef. These fish are usually solitary but have gathered in the summer in the Red Sea for spawning. Shark Reef, Ras Mohammed Marine Park, Sinai,...

Alex Mustard / Bohar snappers (Lutjanus bohar) breaking up into smaller groups to spawn. The fish swim short arches above the main group as they release clouds of gametes. Shark City, Ulong, Rock Islands, Palau. T...

Alex Mustard / Starfish close up detail, Blairgowrie, Mornington Penisular, Victoria, Australia. Port Philip Bay, Bass Strait.

Nick Upton / Landscape of fish farm with floating pens for Sea bass and Sea bream, Selonda Bay, Argolis, Peloponnese, Greece, August 2013.

Nick Upton / Landscape of fish farm with floating pens for Sea bass and Sea bream, Selonda Bay, Argolis, Peloponnese, Greece, August 2013.

Nick Upton / Landscape of fish farm with floating pens for Sea bass and Sea bream, Selonda Bay, Argolis, Peloponnese, Greece, August 2013.

Nick Upton / Landscape of fish farm with floating pens for Sea bass and Sea bream, with fish splashing the surface at feeding time, Selonda Bay, Argolis, Peloponnese, Greece, August 2013.

Alex Mustard / Bohar snapper (Lutjanus bohar) school with diver, Ras Mohammed, Ras Mohammed, Sinai, Egypt. Red Sea.

Michel Poinsignon / Gannet (Morus bassanus) diving for fish, Bass Rock, Scotland, July.

Pascal Kobeh / Brown-marbled grouper (Epinephelus fuscoguttatus) laying on sandy sea floor, whilst cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) Sudan. Red Sea.

Alex Mustard / Large school of Bohar snappers (Lutjanus bohar) which have gathered in the summer in the Red Sea for spawning. Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Alex Mustard / School of Bohar snappers (Lutjanus bohar) Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Alex Mustard / Portrait of the, normally solitary Bohar snapper (Lutjanus bohar) in an annual spawning aggregation in June. Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Alex Mustard / The vertical reef wall at Shark Reef, Ras Mohammed, with Scalefin anthias (Pseudanthias squamipinnis) and soft corals (Dendronephthya spp.) Yellowsaddle goatfish (Parupeneus cyclostomus) and school of...

Alex Mustard / School of Bohar snappers (Lutjanus bohar), moving along the face of reef. These fish are up to 80cm in length and normally solitary, but have gathered in summer in spawning aggregation. Shark Reef, Ra...

Alex Mustard / Large school of Bohar snappers (Lutjanus bohar) which have gathered in the summer in the Red Sea for spawning. Each fish is between 60 and 80cm long. Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt...

Alex Mustard / School of large Bohar snappers (Lutjanus bohar) gathered in spawning aggregation off Ras Mohammed, Sinai, Egypt. Red Sea.

Alex Mustard / Large school of Bohar snappers (Lutjanus bohar) gather with smaller shoal of Batfish (Platax orbicularis) in open water off Ras Mohammed at the tip of Sinai, Egypt. These schools gather only in summer...

Alex Mustard / School of Batfish (Platax orbicularis) in front of Bohar snappers (Lutjanus bohar) as the wall at Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Alex Mustard / A colourful nudibranch (Tambja verconis) crawls over the seabed. Blairgowrie, Mornington Penisular, Victoria, Australia. Port Philip Bay, Bass Strait.

Alex Mustard / Tassled anglerfish (Rhycherus filamentosus) is almost perfectly camouflaged as it hides amongst marine life, waiting to ambush prey attracted to worm life lure. Blairgowrie, Mornington Penisular, Vict...

Franco Banfi / European seabass (Dicentrarchus labrax) Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / European seabass (Dicentrarchus labrax) Ischia Island, Italy, Tyrrhenian Sea, Mediterranean

Andrew Parkinson / Storm clouds over Bass Rock in the distance, which is the breeding ground for 140,000 gannets, Firth of Forth, Scotland, UK, May

Andrew Parkinson / Rainbow and storm clouds over Bass Rock in the distance, which is the breeding ground for 140,000 gannets, Firth of Forth, Scotland, UK, May

Graham Eaton / A recently caught European Sea Bass (Dicentrarchus labrax) lying on a rock with fishing rod in the background, Porth Ceiriad, Wales, July

Graham Eaton / Bass (Dicentrarchus labrax) above kelp. Cardigan Bay, Wales, July.

Toby Roxburgh / 2020VISION / Crate of European sea bass (Dicentrarchus labrax) at Newlyn Harbour fish auction, Cornwall, England, UK, March 2011

Pete Oxford / Harlequin Bass (Serranus tigrinus) next to coral, Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Cymothoid isopod (Anilocra spp or Renocila spp) on Creolefish (Paranthias furcifer) Bonaire, Netherlands Antilles, Caribbean

Alex Mustard / 2020VISION / Seabass (Dicentrarchus labrax) swimming through the wreck of the Fleur De Lys, Swanage, Dorset, UK, July

Pete Oxford / Creolefish (Paranthias furcifer), Bonaire, Netherlands Antilles, Caribbean

Peter Cairns / 2020VISION / North Berwick harbour at night, East Lothian, Scotland, UK, July 2010

Peter Cairns / 2020VISION / North Berwick harbour at night, East Lothian, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Souvenir shop gannet and puffin clocks inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / North Berwick harbour at night, East Lothian, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Souvenir shop selling puffin eggcups inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Scene inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Souvenir shop inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Cafe inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Cafe inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Souvenirs and cafe inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Cafe sign inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Young man looking at cards inside the Scottish Seabird Centre in North Berwick showing economic benefits of presence of Bass Rock, Firth of Forth, Scotland, UK, July 2010

Peter Cairns / 2020VISION / Signs for various wildlife tourism activities from the Seabird Centre, North Berwick , Scotland, UK, July 2010

Peter Cairns / 2020VISION / Signs for various wildlife tourism activities from the Seabird Centre, North Berwick , Scotland, UK, July 2010

Peter Cairns / 2020VISION / Signs for various wildlife tourism activities from the Seabird Centre, North Berwick , Scotland, UK, July 2010