Nick Hawkins / Juvenile Pollock (Pollachius virens) school within the protective fronds of kelp near Port Joli, Nova Scotia, Canada. August

Five Films / Fisherman using a net to land a large Pollack (Pollachius pollachius), with dog on boat, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Jeff Rotman / Fishermen clean Atlantic Cod (Gadus morhua) on deck of fishing trawler, with herring gulls (Larus argentatus) flocking in the background. Stellwagen Banks, New England, United States, North Atlantic O...

Alex Mustard / A close up portrait of a cod (Gadus morhua) over a kelp forest. Husavik Iceland. North Atlantic Ocean. April 2012

Alex Mustard / A shoal of cod (Gadus morhua) in kelp forest. These cod were gathered off the north coast of Iceland to spawn, photographed during a two week break in fishing season, to allow the fish to spawn. Thors...

Wild Wonders of Europe / Lundgren / Atlantic cod (Gadus morhua) Saltstraumen, Bod, Norway, October 2008

Wild Wonders of Europe / Lundgren / Atlantic cod (Gadus morhua) portrait, Saltstraumen, Bod, Norway, October 2008

Wild Wonders of Europe / Lundgren / Atlantic cod (Gadus morhua) portrait, Saltstraumen, Bod, Norway, October 2008

Florian Graner / Atlantic cod (Gadus morhua) swimming along seabed, Norway

Doug Allan / Shoal of Atlantic cod (Gadus morhua) in fish pen. Norway, Scandinavia, Europe

Florian Graner / Atlantic cod {Gadus morhua} Tysfjord, Berents Sea, Norway

Nick Hawkins / An Atlantic polluck (Pollachius pollachius) swimming over a patch of eelgrass (Zostera marina). Nova Scotia, Canada. September

Five Films / Fisherman placing a Pollack (Pollachius pollachius) in a crate, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman lifting a Pollack (Pollachius pollachius) into boat, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Close-up of the end of a fishing rod bending as a Pollack (Pollachius pollachius) is reeled in, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Man reeling in a Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Two men fishing for Pollack (Pollachius pollachius), close up of a reel, sustainable fishing using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Close-up of a man reeling in a Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman using a net to land a large Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman reeling in a Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman reeling in a Pollack (Pollachius pollachius) with another boat in the background, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman reeling in a Pollack (Pollachius pollachius) with another fisherman nearby, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman reeling in a Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Tracking shot of a Northern gannet (Morus bassanus) flying over the sea, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Tracking shot of a Northern gannet (Morus bassanus) flying over the sea, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Greater black-backed gull (Larus marinus) flying at sea, with Black headed gulls (Chroicocephalus ridibundus) in winter plumage, English Channel, near Salcombe, Devon, UK, November.

Five Films / Close-up of a fisherman tying loops in his line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Slow motion shot of a fisherman using a net to land a large Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Pollack (Pollachius pollachius) struggling on a hook, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Slow motion clip of a Pollack (Pollachius pollachius) struggling on a fishing hook, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Slow motion clip of a Pollack (Pollachius pollachius) struggling on a fishing hook, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman lifting a Pollack (Pollachius pollachius) into boat, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman lifting a Pollack (Pollachius pollachius) into boat, with dog nearby, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman lifting a Pollack (Pollachius pollachius) into a boat, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Slow motion clip of waves, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Pollack (Pollachius pollachius) struggling on a hook, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman reeling a Pollack (Pollachius pollachius) in, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman using a net to land a large Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman lifting a Pollack (Pollachius pollachius) into boat, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fishermen reeling in Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fishermen reeling in Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fishermen reeling in Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman arranging Pollack (Pollachius pollachius) in an icebox, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman arranging Pollack (Pollachius pollachius) in an icebox, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman arranging Pollack (Pollachius pollachius) in an icebox, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman arranging Pollack (Pollachius pollachius) in an icebox, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Close-up of a crate filled with Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Close-up of a fisherman reeling in Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman gutting a Pollack (Pollachius pollachius) and throwing entrails to seabirds, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman gutting a Pollack (Pollachius pollachius) and throwing entrails to seabirds, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Close-up of a crate filled with Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman using a net to land a large Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman using a net to land a large Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman using a net to land a struggling Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fisherman lifting a Pollack (Pollachius pollachius) into boat, sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Fishermen reeling in Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Five Films / Three fishing boats, fishing for Pollack (Pollachius pollachius), sustainably caught using pole and line, English Channel, near Salcombe, Devon, UK, November 2016.

Michel Roggo / Inuit fisherman, fishing for Atlantic cod (Gadus morhua) Ilulissat Icefjord UNESCO World Heritage Site, Greenland, August 2014. Photographed for the Freshwater Project.

Sue Daly / Ling (Molva molva) Isle of Man, July 2015

Terry Whittaker / Commercial fishermen unloading and sorting Cod (Gadus morhua) Grindavik harbour, Iceland, March 2014.

Terry Whittaker / Cod (Gadus morhua) caught by commercial fishing vessel, Grindavik harbour, Iceland, March 2014.

Terry Whittaker / Crates of Cod (Gadus morhua) on Grindavik harbour, caught by commercial fishing vessel, Iceland, March 2014.

Sue Daly / Shoal of Pouting (Trisopterus luscus), Sark, British Channel Islands, UK, June.

Sue Daly / Shoal of Pouting (Trisopterus luscus), Sark, British Channel Islands, UK, June.

Sylvain Cordier / Herring gull (Larus argentatus) with fish (cod), Norway

Sylvain Cordier / Herring gull (Larus argentatus) with a fish (cod), Norway, July.

Pal Hermansen / Traditional clipfish, dried and salted cod, Isafjrdur, Norway. July.

Graham Eaton / Pollack / Lythe (Pollachius pollachius) swimming in clear water, Cardigan Bay, Abersoch, Wales, UK August

SCOTLAND: The Big Picture / European river otter (Lutra lutra) feeding on Atlantic cod (Gadus morhua), Shetland, Scotland, UK, July. Small repro only.

SCOTLAND: The Big Picture / European river otter (Lutra lutra) feeding on Atlantic cod (Gadus morhua), Shetland, Scotland, UK, July. Small repro only.

SCOTLAND: The Big Picture / European river otter (Lutra lutra) bringing Atlantic cod (Gadus morhua) ashore, Shetland, Scotland, UK, July. Small repro only.

Franco Banfi / Atlantic cod (Gadus morhua) Little Strytan dive site, Eyjafjordur nearby to Akureyri, northern Iceland, North Atlantic Ocean.

Franco Banfi / Scuba diver with Wolf eel (Anarrhichthys ocellatus) and Atlantic cod (Gadus morhu) Little Strytan dive site, Eyjafjordur nearby to Akureyri, northern Iceland, North Atlantic Ocean.

Alex Mustard / Diver swimming with an aggregation of Cod (Gadus morhua) over a kelp forest. These cod were gathered in early spring off the north coast of Iceland to spawn. Thorshofn, Iceland. North Atlantic Ocean....

Wild Wonders of Europe / Widstrand / Three Atlantic cod (Gadus morhua) in fishing net being pulled onto fishing boat, Senja, Troms County, Norway, Scandinavia, January. Cod are attracted to this area to feed on the huge population of spr...

Wild Wonders of Europe / Widstrand / Atlantic cod (Gadus morhua) in fishing net being pulled onto fishing boat, Senja, Troms County, Norway, Scandinavia, January. Cod are attracted to this area to feed on the huge population of spring s...

Wild Wonders of Europe / Widstrand / Gulls (Laridae) flying around Atlantic cod (Gadus morhua) fishing boat, Senja, Troms County, Norway, Scandinavia, January 2015. Cod are attracted to this area to feed on the huge population of spring...

Wild Wonders of Europe / Widstrand / Gulls (Laridae) circling around an Atlantic cod (Gadus morhua) fishing boat, Senja, Troms County, Norway, Scandinavia, January 2015. Cod are attracted to this area to feed on the huge population of s...

Wild Wonders of Europe / Widstrand / Atlantic cod (Gadus morhua) fishing boat with Gulls (Lardiae) circling, Senja, Troms County, Norway, Scandinavia, January 2015. Cod are attracted to this area to feed on the huge population of spring...

Wild Wonders of Europe / Widstrand / Gulls (Laridae) flying around Atlantic cod (Gadus morhua) fishing boat with sun low over horizon, Senja, Troms County, Norway, Scandinavia, January 2015. Cod are attracted to this area to feed on the...

Peter Cairns / Atlantic cod (Gadus morhua) heads drying on racks, Hamnoya, Lofoten, Norway. March 2015. Vulnerable species.

Peter Cairns / Atlantic cod (Gadus morhua) drying in wracks in winter, Hamnoya, Lofoten, Norway

Peter Cairns / Atlantic cod (Gadus morhua) drying in wracks in winter, Hamnoya, Lofoten, Norway

Peter Cairns / Atlantic cod (Gadus morhua) drying in wracks in winter, Hamnoya, Lofoten, Norway

Jeff Rotman / Atlantic Cod (Gadus morhua) close up of face, Stellwagon Bank, Massachusetts, New England, USA, North Atlantic Ocean.

Philip Stephen / Fishermen winch a catch of Cod (Gadus morhua) on board the North Sea trawler 'Ocean Harvest', March 2014. Property released. All non-editorial uses must be cleared individually.

Philip Stephen / Hopper filled with Cod (Gadus morhua) on board a North Sea trawler, February 2014. All non-editorial uses must be cleared individually.

Philip Stephen / Hopper filled with Cod (Gadus morhua) and Saithe (Pollachius virens) on board a North Sea trawler, February 2014. All non-editorial uses must be cleared individually.

Jeff Rotman / Fishermen sorting catch of Yellowtail flounders (Limanda Ferruginea) and Atlantic cod (Gadus morhua) on the deck of fishing dragger. Stellwagen Banks, New England, United States, North Atlantic Ocean,...

Jeff Rotman / Atlantic cod (Gadus morhua) and Yellowtail flounders (Limanda ferruginea) on deck of fishing dragger. Stellwagen Banks, New England, United States, North Atlantic Ocean, March 2009.

Jeff Rotman / Bycatch of Yellowtail flounders (Limanda ferruginea) and Atlantic cod (Gadus morhua) on the deck of fishing dragger. Stellwagen Banks, New England, United States, North Atlantic Ocean, March 2009.

Jeff Rotman / Bycatch of Yellowtail flounders (Limanda ferruginea) and Atlantic cod (Gadus morhua) on the deck of fishing dragger. Stellwagen Banks, New England, United States, North Atlantic Ocean, March 2009.

Jeff Rotman / Fishermen sorting catch of Yellowtail flounders (Limanda Ferruginea) and Atlantic cod (Gadus morhua) on the deck of fishing dragger. Stellwagen Banks, New England, United States, North Atlantic Ocean,...

Jeff Rotman / Fishing dragger emptying net full of Yellowtail flounders (Limanda ferruginea) and Atlantic Cod (Gadus morhua). Stellwagen Bank, New England, United States; North Atlantic Ocean, March 2009.

Brent Stephenson / Atlantic cod (Gadus morhua) heads and skeletons drying on racks. Most of these are destined for markets in Nigeria. Reykjavik, Iceland. August.

Brent Stephenson / Atlantic cod (Gadus morhua) hairs and skeletons air drying on racks. Most of these are destined for markets in Nigeria. Reykjavik, Iceland. August.