Alex Mustard / Hawksbill turtle (Eretmochelys imbricata) male swimming in open water above a coral reef. Tank Rock, Fiabacet, Misool, Raja Ampat, West Papua, Indonesia. Ceram Sea, Tropical West Pacific Ocean.

Alex Mustard / Colourful reef scene with Coral grouper (Cephalopholis miniata), map puffer (Arothron mappa) and Panda butterflyfish (Chaetodon adiergastos). Tank Reef, Fiabacet Islands, Misool, Raja Ampat, Indonesia...

Alex Mustard,Alex Mustard / A nudibranch (Dendronotus frondosus) photographed in the field aquarium, Gulen, Norway. North East Atlantic.

Alex Mustard,Alex Mustard / Nudibranch (Flabellina nobilis) photographed in the field aquarium in Gulen, Norway. North East Atlantic Ocean.

Steven Kazlowski / Crew bleeds a full deckload of Pacific cod fish (Gadidae family) before putting them in salt water tanks, on the fishing trawler Western Dawn, Gulf of Alaska, USA. No release available.

Alex Mustard / A captive Zebra shark (Stegostoma fasciatum / varium) portrait, with diver behind, in Brighton Sealife Centre, Brighton, England, UK. Model released, not property released

Michele Westmorland / Split level view of scuba diver with PR Aquanauts boat in Grenada, Caribbean. May 2009. Property released and diver model released.

Jeff Rotman / Japanese Giant Spider Crab (Macrocheira kaempferi) World's Largest Crustacean in Tokyo Aquarium, Japan.

Shane Gross / Invasive lionfish (Pterois volitans) in a lab tank to be studied by researchers. Bahamas, September 2015.

Ashley Cooper / Children displaced by flooding at Chiteskesa refugee camp, near Mulanje, Malawi. March 2015.

Ashley Cooper / Solar thermal panels for heating water on the rooftops of a tea house in the Himalayan foothills, Nepal. December 2012

Ashley Cooper / American tank left during the second world war on Funafuti Atoll, Tuvalu. March 2007

Ashley Cooper / Woman filling a bucket from a tank outside her house supplied by a water charity. The charity supplies water to houses who have had no running water for over five months during the 2012-2017 Californ...

Ashley Cooper / Water tank supplied by a water charity in Porterville. The charity supplies water to houses who have had no running water for over five months during the 2012-2017 drought near Bakersfield, Californi...

Ashley Cooper / The Perlan building in Reykjavik, Icleand. The structure was designed around 5 huge water tanks that hold geothermally heated water. This hot water is used to provide heating for nearby buildings. Se...

Ashley Cooper / The Perlan building, Reykjavik, Icleand. The structure was designed around 5 huge water tanks that hold geothermally heated water used to provide heating. September 2010.

Ashley Cooper / Cliff railway linking Lynmouth with Lynton on the north Devon coast. The railway is water powered, with a tank underneath the top carriage filling with water, till it is heavy enough to fall by gravit...

Doug Perrine / Lava emanating from Pu'u O'o, Kilauea Volcano, erupting from multiple fissures in Leilani Estates, near Pahoa, Puna, Hawaii. The fissure in the lower part of the frame is Fissure 8, which became the d...

Nick Upton / Young boy reaching into plastic tank held by his mother for Pond snails he has caught whilst fishing in stream, Bristol, UK, October 2014. Model released.

Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...

Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...

Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...

Nick Upton / European eel (Anguilla anguilla) elvers swimming in a large holding tank at UK Glass Eels, ahead of being reintroduced to a lake in Wales, Gloucester, UK, October 2016

Nick Upton / European eel (Anguilla anguilla) elvers swimming in a large holding tank at UK Glass Eels, ahead of being reintroduced to a lake in Wales, Gloucester, UK, October 2016

Philippe Clement / Visitors looking at tropical fishes in huge aquarium at Oceanopolis - ocean discovery park - at Brest, Normandy, France, September 2015

Pascal Kobeh / A diver above a tank laying on the deck of the wreck of the Nippo Maru, a cargo ship used as a naval auxiliary, Chuuk or Truk Lagoon, Carolines Islands, Pacific Ocean

Pascal Kobeh / A diver above a tank laying on port side on the deck of the the wreck of the San Francisco Maru, a passenger cargo used as a auxiliary transport vessel, Chuuk or Truk Lagoon, Carolines Islands, Pacifi...

Pascal Kobeh / Researcher in tank with Black tip reef Sharks (Carcharhinus melanopterus) where he tags them before releasing them. Vabbinfaru Island. North Male Atoll, Maldives. Indian Ocean.

Alex Mustard / Large male Hawksbill turtle (Eretmochelys imbricata) swimming in open water. Tank Rock, Fiabacet, Misool, Raja Ampat, West Papua, Indonesia. Tropical West Pacific Ocean. Ceram Sea.

Alex Mustard / Large male Hawksbill turtle (Eretmochelys imbricata) swimming in open water. Tank Rock, Fiabacet, Misool, Raja Ampat, West Papua, Indonesia. Tropical West Pacific Ocean. Ceram Sea.

Roland Seitre / Common caiman (Caiman crocodilus) with mouth open showing teeth, in tank, Aquarium du Val de Loire, Amboise, France. Captive, native to Central and South America.

Michael Durham / Technical supervisor for the Nez Perce Department Of Fisheries Resources Management holding an adult Three toothed / Pacific lamprey (Lampetra tridentata) before placing it in a holding tank. The Colu...

Ernie Janes / Gereraniums in terracotta container with decorative water tank and watering cans, England, UK, June.

Michele Westmorland / Crew member filling scuba diving tanks. Galapagos Islands, January 2012. Model released.

Franco Banfi / Diver exploring with scooter the bow with machine gun of the LST 349, a British Landing Ship Tank sunk on Febbruary 1944, Ponza Island, Italy, Tyrrhenian Sea, Mediterranean

Roland Seitre / Frog tank at the El Valle Amphibian Conservation Center, Panama, Central America, March 2008,

David Woodfall / Water tank provided by Clean water project initiated by NGO, Uttaran, Ganges delta, Bangladesh, November 2008

David Woodfall / Water tank provided by Clean water project initiated by NGO, Uttaran, Ganges delta, Bangladesh, November 2008

Chris Gomersall / Desert adapted African elephants (Loxodonta africana) drinking from village water tank, Huab river valley, Damaraland, Namibia, November

Suzi Eszterhas / Water storage tank at the Headquarters of the West Gate Conservancy, Northern Rangelands Trust, Kenya

Jane Burton / Bubbles of air streaming over the water surface of a fish tank for a fast flowing sandy river from Papua New Guinea.

Jabruson / Chimpanzee retrieving water from tank {Pan troglodytes schweinfurthii} Central Africa

LYNN M. STONE / Pouring sap water from Maple trees into tank for Maple syrup production, Vermont, USA

LYNN M. STONE / Pouring sap water from Maple trees into tank for Maple syrup production, Vermont, USA

Paul Johnson / Barn owl juveniles {Tyto alba} nesting in old water tank UK

Ross Hoddinott / Tank blocks from World War 2, along the shoreline on beach at sunset, Alnmouth beach, Northumberland, UK. October 2023.

Adrian Davies / Water lettuce (Pistia stratiotes) with submerged roots in aquarium.

Roland Seitre / Chinese giant salamander (Andrias davidianus) in a captive environment at Cincinnati zoo, Cincinnati, Ohio, USA.

Nick Upton / Remote camera in floating camera tank set up to photograph breeding frogs in a garden pond, Wiltshire, UK. February. Property released.

Nick Upton / Remote camera in floating camera tank linked to flash guns to photograph breeding frogs in a garden pond, Wiltshire, UK. February. Property released.

Doug Gimesy / Studioshot portrait of Yarra pygmy perch (Nannoperca obscura) in water. Taken under controlled conditions. In temporary captivity in tank, collected by researchers in field, Victoria, Australia. Crop...

Doug Gimesy / Studioshot portrait of Yarra pygmy perch (Nannoperca obscura) in water. Taken under controlled conditions. In temporary captivity in tank, collected by researchers in field, Victoria, Australia. Crop...

Doug Gimesy / Studioshot portrait of Yarra pygmy perch (Nannoperca obscura) in water. Taken under controlled conditions. In temporary captivity in tank, collected by researchers in field, Victoria, Australia. Crop...

Doug Gimesy / Studioshot portrait of Yarra pygmy perch (Nannoperca obscura) in water. Taken under controlled conditions. In temporary captivity in tank, collected by researchers in field, Victoria, Australia. Crop...

Doug Gimesy / Studioshot portrait of Yarra pygmy perch (Nannoperca obscura) in water. Taken under controlled conditions. In temporary captivity in tank, collected by researchers in field, Victoria, Australia. Crop...

Nick Upton / Puddle formed in a tank track supporting a colony of rare Fairy shrimp (Chirocephalus diaphanus), Salisbury Plain, Wiltshire, UK. September.

Nick Upton / Puddle formed in a tank track supporting a colony of rare Fairy shrimp (Chirocephalus diaphanus), Salisbury Plain, Wiltshire, UK. September.

Yves Lanceau / Domestic cat, brown tabby and white cat standing with head down looking into a tank of water containing a goldfish.

Ugo Mellone / Water cistern in the Sahara desert, this can be a deadly trap for wildlife. Djebel Rich, Southern Morocco, Africa.

Ugo Mellone / Water cistern in the Sahara desert, a deadly trap for wildlife, Aydar, Southern Morocco, Africa.

Ugo Mellone / Water cistern in the Sahara desert, a deadly trap for wildlife. Aydar, Southern Morocco, Africa. March, 2020.

Doug Gimesy / Southern purple spotted gudgeon (Mogurnda adspersa) in fish tank. Colour of fish is washed out/paler than normal. Kerang, Victoria, Australia. November

Doug Gimesy / Southern purple spotted gudgeon (Mogurnda adspersa) in fish tank. Colour of fish is washed out/paler than normal. Kerang, Victoria, Australia. November

Doug Gimesy / Southern purple spotted gudgeon (Mogurnda adspersa) in fish tank. Colour of fish is washed out/paler than normal. Kerang, Victoria, Australia. November

Doug Gimesy / Southern purple spotted gudgeon (Mogurnda adspersa) in fish tank. Colour of fish is washed out/paler than normal. Kerang, Victoria, Australia. N

Sirachai Arunrugstichai / Brownbanded bamboo sharks (Chiloscyllium punctatum) seen in a small captive tank at a seafood market, Chonburi Province, Thailand, January 2016.

Juergen Freund / Research aquarist Andrea Severeti with experiments in National Sea Simulator, fragment and spawn grown Coral from Great Barrier Reef. Australian Institute of Marine Science where impacts of complex en...

Juergen Freund / Coral growing in marine tank where impacts of complex environmental changes are researched. National Sea Simulator, Australian Institute of Marine Science, Cape Ferguson, Queensland, Australia. 2019.

Juergen Freund / Coral growing in marine tank where impacts of complex environmental changes are researched. National Sea Simulator, Australian Institute of Marine Science, Cape Ferguson, Queensland, Australia. 2019.

Juergen Freund / Coral growing in marine tank where impacts of complex environmental changes are researched. National Sea Simulator, Australian Institute of Marine Science, Cape Ferguson, Queensland, Australia. 2019.

Juergen Freund / Coral growing in marine tank where impacts of complex environmental changes on coral reefs are researched. National Sea Simulator, Australian Institute of Marine Science, Cape Ferguson, Queensland, Au...

Juergen Freund / Coral growing in marine tank where impacts of complex environmental changes on coral reefs are researched. National Sea Simulator, Australian Institute of Marine Science, Cape Ferguson, Queensland, Au...

Juergen Freund / Coral specimens in tank at National Sea Simulator where impacts of complex environmental changes on coral reefs are researched. Australian Institute of Marine Science, Cape Ferguson, Queensland, Austr...

Juergen Freund / Coral and Fish native to Great Barrier Reef inside experiment tanks at National Sea Simulator. Australian Institute of Marine Science where impacts of complex environmental changes are researched, Cap...

Juergen Freund / Coral native to Great Barrier Reef inside experiment tank at National Sea Simulator, biologist in background. Australian Institute of Marine Science where impacts of complex environmental changes are...

Juergen Freund / Tanks with Great Barrier Reef experiments at National Sea Simulator. Australian Institute of Marine Science where impacts of complex environmental changes are researched, Cape Ferguson, Queensland, Au...

Shane Gross / Lemon shark pup (Negaprion brevirostris) in a research tank at the Cape Eleuthera Institute, The Bahamas

Eric Baccega / Zookeepers cleaning the hippo tank, Beauval Zoo, Saint-Aignan, France.

Eric Baccega / Zookeepers cleaning the hippo tank, Beauval Zoo, Saint-Aignan, France.

Eric Baccega / Zookeepers cleaning the hippo tank, Beauval Zoo, Saint-Aignan, France.

David Fleetham / Two divers get a close look at Scalloped hammerhead shark, (Sphyrna lewini) along with many other species in their big tank. Captive at Maui Ocean Center, Hawaii Model released.

Philippe Clement / Red-bellied piranha / red piranha (Pygocentrus nattereri / Serrasalmus nattereri) swimming, native to South America. Captive