David Fleetham / Green Sea Turtle (Chelonia mydas) below surf instructor Tara Angioletti on a stand-up paddle board off Canoe Bearch, Maui, Hawaii. Model released.

Graham Eaton / A lone surfer silhouetted whilst walking into the sea, Hells Mouth, Wales, October 2012

Michael Pitts,Michael Pitts / Divers on the wreck of the tugboat, 'Tienstin'. Abu Galawa, Red Sea, July 2010

Andy Trowbridge / Split level shot of a fly fisherman (Murray Trowbridge) releasing a large brown trout (Salmo trutta) in a gin clear 'backcountry' river, North Canterbury South Island, New Zealand. January, 2012. Mode...

Alex Mustard / 2020VISION / Young Grey seal (Halichoerus grypus) playing with snorkeller, Farne Islands, Northumberland, England, UK, July. Model released.

Jeff Rotman / Free diver swimming in shallow water over coral reef, Sinai, Egypt, Red Sea Model released Model released.

Juergen Freund / Container of toilets spilled in to the Red Sea

Doug Perrine / Diver looking at Purple tube sponge {Aplysina lacunosa} Bahamas, Caribbean

Doug Perrine / Diver and Grunts in airplane wreck, Cozumel, Mexico

Doug Perrine / Two Divers at Shipwreck, St Croix, Caribbean

Doug Allan / Diver under access hole that has been cut in the sea ice, Antarctica 1987

Juergen Freund / Split level of snorkeler underwater in freshwater pond. Florida USA