Andy Trowbridge / Fly fisherman (Michael Watson) 'playing' a large brown trout (Salmo trutta) on small spring fed creek, North Canterbury, South Island, New Zealand, December, 2003. Model Released.

Andy Trowbridge / Fly fisherman (Michael Watson) releasing a large brown trout (Salmo trutta) which was caught on a small spring fed stream. 'Catch and release' is widely practised in New Zealand. North Canterbury, Sou...

Andy Trowbridge / Brown trout (Salmo trutta) with artificial dry fly ( Parachute Adams) in corner of mouth. North Canterbury, South Island, New Zealand. January.

Andy Trowbridge / Brown trout (Salmo trutta) having artificial nymph removed with forcep while being held in clear water, North Canterbury, New Zealand. November.

Andy Trowbridge / White Heron (Egretta alba modesta) fishing in the Heathcote River during winter. Heathcote River, Christchurch, Canterbury, South Island, New Zealand.

Andy Trowbridge / Fly fisherman (David Tasker) 'playing' a large brown trout (Salmo trutta) on a small stream, North Canterbury, South Island, New Zealand. October, 2005. Model released.

Andy Trowbridge / Fly fisherman (David Tasker) 'playing' a large brown trout (Salmo trutta) on a small stream, North Canterbury, South Island, New Zealand. October, 2005. Model released.

Andy Trowbridge / Fly fisherman (Paul van Klink) 'sight' fishing to brown trout (Salmo trutta) in a gin clear 'backcountry' river, Ugly River, Kahurangi National Park, Buller District, South Island, New Zealand. Decemb...

Andy Trowbridge / Female fly fisher with a 'trophy' brown trout (Salmo trutta) of 12 pounds (5.5kg), Lewis Pass, North Canterbury, South Island, New Zealand. December, 2005.

Andy Trowbridge / A fly fisherman (Paul van Klink) fishing for brown trout (Salmo trutta) on a small spring creek running through farmland. Here the fisherman is fishing 'blind', drifting a weighted nymph through likel...

Andy Trowbridge / Fly fisherman (David Tasker) poses with a very good brown trout (Salmo trutta) prior to it's release, North Canterbury, Selwyn District, South Island, New Zealand. October, 2005. Model released.

Andy Trowbridge / Fly fisherman (Paul van Klink) hooking a lively brown trout (Salmo trutta) in a clear 'backcountry' river, Ugly River, Kahurangi National Park, Buller District, South Island, New Zealand. December, 20...

Andy Trowbridge / Fly fisherman (Paul van Klink) playing a lively brown trout (Salmo trutta) in a clear 'backcountry' river, Ugly River, Kahurangi National Park, Buller District, South Island, New Zealand. December, 20...

Andy Trowbridge / Fly fisherman (Paul van Klink) casting a fly to a sighted brown trout (Salmo trutta) in a gin clear 'backcountry' river, Ugly River, Kahurangi National Park, Buller District, South Island, New Zealand...

Andy Trowbridge / Fly fisherman (Paul van Klink) drifting a fly pass a brown trout (Salmo trutta) in a gin clear 'backcountry' river, Ugly River, Kahurangi National Park, Buller District, South Island, New Zealand. Dec...

Andy Trowbridge / Fly fisherman (David Tasker) drifting an artificial fly passed a 'sighted' brown trout (Salmo trutta) sitting in shadow water, Oreti River, Te Anau, Southland District, South Island, New Zealand. Dece...

Andy Trowbridge / Fly fisherman (David Tasker) drifting an artifical fly pass a 'sighted' brown trout (Salmo trutta) on the Oreti River, Te Anau, Southland District, South Island, New Zealand. December, 2006. Model rel...

Andy Trowbridge / A fly fisherman (David Tasker) searches for trout on the Oreti River, Te Anau, Southland District, South Island, New Zealand. December, 2006. Model released.

Andy Trowbridge / Brown trout (Salmo trutta) with artificial gold bead nymph in corner of mouth, lying in a gin clear water in the Southern Alps, Oreti River, Te Anau, Southland, South Island, New Zealand. December, 20...

Andy Trowbridge / Fly fisherman (David Tasker) changes fly pattern on the Oreti River, Te Anau, Southland District, South Island, New Zealand. December, 2006. Model released.

Andy Trowbridge / Fly fisherman casting a fly to a sighted brown trout (Salmo trutta) in a gin clear 'backcountry' river, Springs Junction, West Coast, South Island, New Zealand. December, 2009.

Andy Trowbridge / A fly fisherman searches for trout on a freestone river, North Canterbury, South Island, New Zealand. December, 2011.

Andy Trowbridge / Underwater shot of a fly fisherman releasing a large brown trout (Salmo trutta) in a gin clear 'backcountry' river, North Canterbury South Island, New Zealand. December.

Andy Trowbridge / Two fly fishermen fishing to 'sighted' brown trout (Salmo trutta) in a clear 'backcountry' river, North Canterbury South Island, New Zealand. December, 2011.

Andy Trowbridge / Brown trout (Salmo trutta) on net with artificial dry fly (cicada imitation) in corner of mouth. North Canterbury, South Island, New Zealand. January, 2012.

Cheryl-Samantha Owen / Fisherman on Lake Moa, Tana River Delta, Kenya, East Africa 2010

David Woodfall / Tidal Barrage generating electricity from tidal river but modifying the flow of important salmon and sea trout river, Swansea, Wales, UK 2009

David Woodfall / Tidal Barrage generating electricity from tidal river but modifying the flow of important salmon and sea trout river, Swansea, Wales, UK 2009

Wild Wonders of Europe / Möllers / Man pulling in a European grayling (Thymallus thymallus) from the San River, Myczkowce, Poland, September 2011 Model released

Wild Wonders of Europe / Möllers / Man pulling in a European grayling (Thymallus thymallus) from the San River, Myczkowce, Poland, September 2011 Model released

Wild Wonders of Europe / Möllers / Man fishing for European grayling (Thymallus thymallus) in the San River, Myczkowce, Poland, September 2011 Model released

Wild Wonders of Europe / Möllers / Man casting across the San River, Myczkowce, Poland, September 2011 Model released

Wild Wonders of Europe / Möllers / Man fly fishing for European grayling (Thymallus thymallus) in the San River, Myczkowce, Poland, September 2011 Model released

Wild Wonders of Europe / Möllers / Flyfishermen fishing for European grayling (Thymallus thymallus) and Brown trout (Salmo trutta fario) in the San River, Myczkowce, Poland, September 2011 Model released

Wild Wonders of Europe / Möllers / Man fly fishing for European grayling (Thymallus thymallus) in the San River, Myczkowce, Poland, September 2011 Model released

Wild Wonders of Europe / Möllers / Polish tied fly patterns imitating duns / adults of the Blue-winged olive mayfly displayed on Willow (Salix sp) leaves, Myczkowce, San River, Poland, September 2011

Wild Wonders of Europe / Möllers / Polish tied fly patterns imitating various Gammarus species displyed on a Willow (Salix sp) branch cut by a Eurasian beaver (Castor fiber) Myczkowce, San River, Poland,

Wild Wonders of Europe / Möllers / Flyfishing gear, San River, Bachlawa, San River Poland, September 2011

Wild Wonders of Europe / Möllers / Flybox with colourful patterns imitating various gammarus species, Bachlawa, San River, Poland, September 2011

Wild Wonders of Europe / Möllers / Man selecting a dry fly for fly-fishing in the river Allier, Pont-du-Chateau, Auvergne, France, August 2010, model released

Wild Wonders of Europe / Möllers / Man fly-fishing in the river Allier, Pont-du-Chateau, Auvergne, France, August 2010, model released

Wild Wonders of Europe / Möllers / Man casting his fly out onto the river Allier, Pont-du-Chateau, France, August 2010, model released

Ben Lascelles / 'Ukai', a traditional (1300 year old) night fishing method in which an 'usho' Cormorant Fishing Master and 'u' Great cormorant (Phalacrocorax carbo hannedae) work together to fish by the flames of 'Ka...

Ben Lascelles / 'Ukai', a traditional (1300 year old) night fishing method in which an 'usho' Cormorant Fishing Master and 'u' Great cormorant (Phalacrocorax carbo hannedae) work together to fish by the flames of 'Ka...

Ben Lascelles / 'Ukai', a traditional (1300 year old) night fishing method in which an 'usho' Cormorant Fishing Master and 'u' Great cormorant (Phalacrocorax carbo hannedae) work together to fish by the flames of 'Ka...

Ben Lascelles / 'Ukai', a traditional (1300 year old) night fishing method in which an 'usho' Cormorant Fishing Master and 'u' Great cormorant (Phalacrocorax carbo hannedae) work together to fish by the flames of 'Ka...

Ben Lascelles / 'Ukai', a traditional (1300 year old) night fishing method in which an 'usho' Cormorant Fishing Master and 'u' Great cormorant (Phalacrocorax carbo hannedae) work together to fish by the flames of 'Ka...

Ben Lascelles / 'Ukai', a traditional (1300 year old) night fishing method in which an 'usho' Cormorant Fishing Master and 'u' Great cormorant (Phalacrocorax carbo hannedae) work together to fish by the flames of 'Ka...

Ben Lascelles / 'Ukai', a traditional (1300 year old) night fishing method in which an 'usho' Cormorant Fishing Master and 'u' Great cormorant (Phalacrocorax carbo hannedae) work together to fish by the flames of 'Ka...

Ben Lascelles / 'Ukai', a traditional (1300 year old) night fishing method in which an 'usho' Cormorant Fishing Master and 'u' Great cormorant (Phalacrocorax carbo hannedae) work together to fish by the flames of 'Ka...

Konrad Wothe / Grey heron (Ardea cinerea) hunting in frozen river, Usedom, Germany, January

Konrad Wothe / Grey heron (Ardea cinerea) hunting for fish in frozen river, Usedom, Germany, January

Roland Seitre / Ganges River Dolphin (Platanita gangetica) in front of fisherman. Habitat destruction and disturbance are the main causes of this species' decline. Ganges, India.

Roland Seitre / Ganges River Dolphin (Platanita gangetica) in front of fisherman. Habitat destruction and disturbance are the main causes of this species' decline. Ganges, India.

Shaun Robertson / 2020VISION / Water spray from a spinning fishing reel, River Tweed, Berwickshire, Scotland, UK, January 2012. 2020VISION Exhibition. 2020VISION Book Plate. Did you know? The earliest record of use of fishing reels...

Daniel Heuclin / Bolivian pink river dolphin (Inia geoffrensis boliviensis) swimming next to two men in a small boat, River Yapacani, Bolivia, August 2010

Loic Poidevin / Two Grizzly bears (Ursus arctos horribilis) at top of waterfall hunting, one catching Salmon, Brooks river, Katmai National Park, Alaska, USA, July

Loic Poidevin / Two Grizzly bears (Ursus arctos horribilis) waiting for Salmon, Brooks falls, Brooks river, Katmai National Park, Alaska, USA, July

Loic Poidevin / Grizzly bear (Ursus arctos horribilis) with mouth open to catch Salmon, on Brooks falls, Brooks river, Katmai National Park, Alaska, USA, July

Loic Poidevin / Malagasy woman sitting fishing from the river bank, Tsiribihina River, Madagascar 2008.

Rob Jordan / 2020VISION / Family fishing from the bank of the River Tweed at Junction Pool, Kelso, Roxburghshire, Scotland, UK, October 2011

Rob Jordan / 2020VISION / Family fishing from the bank of the River Tweed at Junction Pool, Kelso, Roxburghshire, Scotland, UK, October 2011

Rob Jordan / 2020VISION / Portrait of Malcolm Campbell, gillie on 'The Lees' section of the River Tweed, Coldstream, Berwickshire, Scotland, UK, October 2011

Rob Jordan / 2020VISION / 2020VISION Young Champion Shaun Robertson hauling in humane traps used to catch Signal Crayfish (Pacifastacus leniusculus) for The Tweed Foundation to monitor the species population and spread, River...

Rob Jordan / 2020VISION / Fisherman casting for Brown trout (Salmo trutta) and Atlantic salmon (Salmo salar) on the River Tweed, Berwickshire, Scotland, UK, October

Rob Jordan / 2020VISION / Fisherman casting for Brown trout (Salmo trutta) and Atlantic salmon (Salmo salar) on the River Tweed, Berwickshire, Scotland, UK, October

Rob Jordan / 2020VISION / Fisherman casting for Brown trout (Salmo trutta) and Atlantic salmon (Salmo salar) on the River Tweed, Berwickshire, Scotland, UK, October

Rob Jordan / 2020VISION / View of Floors Castle over the River Tweed, with fishermen and cars in the foreground, near Kelso, Roxburghshire, Scotland, UK, October 2010

Rob Jordan / 2020VISION / Gillie holding a female Atlantic salmon (Salmo salar) before release after being caught on the River Tweed at the 'Junction Pool' near Kelso, Roxburghshire, Scotland, UK, October . 2020VISION Exhibiti...

Rob Jordan / 2020VISION / Female Atlantic salmon (Salmo salar) being landed by a gillie after being caught at the 'Junction Pool' on the River Tweed, Kelso, Roxburghshire, Scotland, UK, October 2010

Rob Jordan / 2020VISION / Fisherman standing waist deep and casting in the River Teviot, near Kelso, Roxburghshire, Scotland, UK, October 2011

Merryn Thomas / Pilchard lugger "Our Daddy" on the River Looe Estuary at low tide, Looe, Southeast Cornwall, UK. April 2009.

Merryn Thomas / Pilchard lugger "Our Daddy" on the River Looe Estuary, Looe, Southeast Cornwall, UK. April 2009.

Linda Pitkin / 2020VISION / Environment Agency staff David Hunter catching Atlantic salmon (Salmo salar) for participation in a breeding programme, the fish was released soon after catching, River ITchen, Hampshire, England, UK,...

Linda Pitkin / 2020VISION / Atlantic salmon (Salmo salar), released immediately after capture by a fisherman because the fish is a mature female ready to spawn, River Tweed, Berwikshire, Scotland, UK, October. Did you know? The...

Linda Pitkin / 2020VISION / Atlantic salmon (Salmo salar), released immediately after capture by a fisherman because the fish is a mature female ready to spawn, River Tweed, Berwikshire, Scotland, UK, October

Linda Pitkin / 2020VISION / Split-level view of the River Tweed, with Coldstream Bridge and fishing boat, Berwickshire, Scotland, UK, October

Linda Pitkin / 2020VISION / Environment Agency staff David Hunter catching Atlantic salmon (Salmo salar) in connection with a breeding programme, the fish are released soon after catching, River Itchen, Hampshire, England, UK, J...

Linda Pitkin / 2020VISION / Two Atlantic salmon (Salmo salar) in a bucket, caught by Environment Agency staff in connection with a breeding programme and released soon after, River Itchen, Hampshire, England, UK, January 2012

Laurie Campbell / Common kingfisher (Alcedo atthis) on fishing perch, River Whiteadder, Berwickshire, Scotland, September

Merryn Thomas / Pilchard lugger "Our Daddy" on the River Looe Estuary, Looe, Southeast Cornwall, UK. April 2009.

Linda Pitkin / 2020VISION / Arctic charr (Salvelinus alpinus) males showing breeding colours, in a river where they have come to spawn, in front of charr net, Ennerdale Valley, Lake District NP, Cumbria, England, UK, November 20...

Florian Möllers / Chinese fisherman on his raft with Great Cormorant (Phalacrocorax carbo sinensis) removing a fish from the bird's gullet. Li River, Yangshuo, Guangxi, China, November.

Florian Möllers / Great Cormorants (Phalacrocorax carbo sinensis) sitting on the raft of a Cormorant fisherman. Li River, Yangshuo, Guangxi, China, November.

Florian Möllers / Fish biologists holding a Grayling (Thymallus thymallus) needed for artificial insemination and breeding. River Pielach, southwest of Munich, Bavaria, Germany, March.

Florian Möllers / Fish biologists returning caught Grayling (Thymallus thymallus) for artificial insemination and breeding. River Pielach, southwest of Munich, Bavaria, Germany, March.

Florian Möllers / Light show in the city of Yangshu during preparations for a river theatre play around the tradition of Cormorant fishing along the Li River. Guangxi, China, November 2006.

Florian Möllers / Chinese Fisherman and one of his Great Cormorants (Phalacrocorax carbo sinensis). Li River, Yangshuo, Guangxi, China, November.

Florian Möllers / Fisherman holding Great Cormorant (Phalacrocorax carbo sinensis) retrieving a large fish from its throat. Li River, Yangshuo, Guangxi, China.

Florian Möllers / Chinese Fisherman and one of his Great Cormorants (Phalacrocorax carbo sinensis), Li River, Yangshuo, Guangxi, China, November.

Florian Möllers / Chinese fisherman on his raft with Great Cormorants (Phalacrocorax carbo sinensis) fishing at night on the Li River. Yangshuo, Guangxi, China, November.

Florian Möllers / Chinese fisherman on his raft with Great Cormorant (Phalacrocorax carbo sinensis), silhouetted against the karst hills at the Li River. Yangshuo, Guangxi, China, November.

Andrew Parkinson / Grey heron (Ardea cinerea) fishing in dappled sunlight on the fringes of the River Lea in London, UK

Andrew Parkinson / Grey heron (Ardea cinerea) fishing in dappled sunlight on the fringes of the River Lea in London, UK

Jerry Monkman / Man fly-fishing on the Swift River in Albany, White Mountains, New Hampshire USA, autumn, Model released, October 2010