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