Alex Mustard / Diver swimming over the stern gun turret of the 330ft long Russian frigate 356, the "MV Keith Tibbetts". The ship was built in 1984 and sunk in 1996. Buccaneer Reef, Cayman Brac, Cayman Islands. Carib...

Franco Banfi / Scuba diver and yellow sponges (Aplysina cavernicola) on Brioni Steamship wreck, Vis Island, Croatia, Adriatic Sea, Mediterranean. Model released.

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

Michael Pitts / Diver on the wreck of the US Submarine tender USS Macaw, sunk in the World War II due to a navigation error, Midway atoll, Pacific Ocean. Model 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 / Lifting a cannon during the recovery of the shipwreck "Las Maravillas", a Spanish galleon sunk in 1658, Bahamas. 1987. Model released Model released.

David Fleetham / Scuba diving charter vessel "Cheng-Ho" in Komodo National Park, Indonesia.

Franco Banfi / Blacktip reef shark (Carcharhinus melanopterus) under the Zodiac, Aldabra Atoll, Natural World Heritage Site, Seychelles, Indian Ocean.

Franco Banfi / Liveaboard dive boat 'Valeria' on Lake Baikal, Siberia, Russia

Franco Banfi / Tourists on land excursion to the shore from the liveaboard dive boat 'Valeria', Lake Baikal, Siberia, Russia.

Franco Banfi / Tourists on land excursion to the shore from the liveaboard dive boat 'Valeria', Lake Baikal, Siberia, Russia.

Franco Banfi / 'Valeria' liveaboard dive boat on Lake Baikal, Siberia, Russia.

Franco Banfi / Liveaboard dive boat 'Valeria', anchored at coast of Lake Baikal, Siberia, Russia.

Pascal Kobeh / Briefing before a dive on boat, Palau, Philippine Sea

Pascal Kobeh / Divers on the "Karwela" wreck, a former ferry sunk in 2006, Gozo Island, Malta, Mediterranean

Pascal Kobeh / A diver on the Mariana wreck, Paros Island, Greece, Aegean Sea

Pascal Kobeh / A diver on the Mariana wreck, Paros Island, Greece, Aegean Sea

Pascal Kobeh / Divers on Palea Kameni wreck located in Santorini caldera with pieces of probably recent pottery laying on the bottom at the front of the ship, Santorini Island, Greece, Aegean Sea

Pascal Kobeh / Divers on the Imperial Eagle wreck, a ferry crossing between Malta and Gozo Island that sunk in 1999 in Qawra Point as an artificial reef, Malta, Mediterranean

Pascal Kobeh / A diver near the machine gun on the deck of the wreck of the P 29 a patrol boat scuttled as an artificial dive site in August 2007, Malta, Mediterranean

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 the cannon gun at the bow of the the wreck of the San Francisco Maru, a passenger cargo used as a auxiliary transport vessel, Chuuk or Truk Lagoon, Carolines Islands, Pacific Ocean

Pascal Kobeh / A diver on the wreck of the Vera K, a Lebanese freighter, sunk in 1974 on the reef near Paphos, Cyprus, Mediterranean Sea

Olga Kamenskaya / Diver coming back to the boat, split level view, Lake Baikal, Siberia, Russia. September 2013.

Franco Banfi / Zodiac with divers leaving the M. Y. Galapagos Aggressor 1 liveaboard, North Seymour Island, Galapagos Islands, East Pacific Ocean

Franco Banfi / Diving boat of the Nautilus Explorer, luxury liveaboard boat, Vancouver Island, British Columbia, Canada, Pacific Ocean

Franco Banfi / Group of Scuba divers on a zodiac RIB, Santa Maria Small lighthous at Formigas Islet, Azores, Portugal, Atlantic Ocean, October 2012.

Pascal Kobeh / Divers exploring the wreck of the P29 patrol boat scuttled as an artificial dive site in August 2007. Wreck covered in algae and invertebrates. Malta, Mediterranean Sea. June 2014.

Pascal Kobeh / Diver exploring the wreck of the P29 patrol boat scuttled as an artificial dive site in August 2007. Wreck covered in algae and invertebrates and surrounded by fish. Malta, Mediterranean Sea. June 201...

Pascal Kobeh / Diver exploring the wreck of the P29 patrol boat scuttled as an artificial dive site in August 2007. Wreck covered in algae and invertebrates. Malta, Mediterranean Sea. June 2014.

Pascal Kobeh / Diver exploring the wreck of the P29 patrol boat scuttled as an artificial dive site in August 2007. Wreck covered in algae and invertebrates and surrounded by fish. Malta, Mediterranean Sea. June 201...

Pascal Kobeh / Diver diving the wreck of the tug boat Rozi scuttled in 1992 off Cirkewwa, Malta, Mediterranean Sea. June 2014.

Pascal Kobeh / Divers by steering wheel of the Imperial Eagle wreck, a ferry sunk in 1999 in Qawra Point as an artificial reef, Malta, Mediterranean Sea. June 2014.

Pascal Kobeh / Diver on Kalipayan wreck with soft corals (Dendronephthya sp.) Bohol, Philippines, Sulu Sea. July 2009. Small reproduction only.

Michael Pitts / Diver on the bow of U-Boat -U352. Type VIIC sunk off Cape Lookout on the 9th May 1942, North Carolina, USA, September 2013.

Michael Pitts / Diver on the conning tower of U-Boat -U352. Type VIIC sunk off Cape Lookout on the 9th May 1942, North Carolina, USA, September 2013.

Michael Pitts / Maritime archaeologist with a 18lb cannon from the wreck of a British warship HMS Colossus, wrecked 1798. St Mary's Roads, Isles of Scilly, UK, August 2013.

Michele Westmorland / Dive master helping guest diver check equipment. Galapagos Aggressor live-aboard dive boat, Galapagos Islands. September 2011. Property and model released.

Michele Westmorland / Scuba divers traveling to dive site aboard inflatable boat,, Galapagos Islands, September 2011. Property and model released.

Michele Westmorland / Scuba divers travelling to dive site aboard inflatable boat, Galapagos Islands, September 2011. Property and model released.

Michele Westmorland / Scuba divers travelling to dive site aboard inflatable boat from the Galapagos Aggressor live-aboard dive boat, Galapagos Islands. September 2011. Property and model released.

Michele Westmorland / Scuba divers travelling to dive site aboard inflatable boat, Galapagos Islands, September 2011. Property and model released.

Michele Westmorland / Scuba divers traveling to dive site aboard inflatable boat,, Galapagos Islands, September 2011. Property and model released.

Michele Westmorland / Dive master checking equipment and divers and giving the OK signal. Galapagos Aggressor live-aboard dive boat, Galapagos Islands. September 2011. Property and model released.

Michele Westmorland / Scuba divers traveling to dive site aboard inflatable boat,, Galapagos Islands, September 2011. Model released.

Michele Westmorland / Scuba divers in inflatable going to dive site. Galapagos Islands, model released.

Michele Westmorland / Scuba divers traveling to dive site aboard inflatable boat,, Galapagos Islands, September 2011. Model released.

Franco Banfi / Scuba diver and Forkbeard (Phycis phycis) on Teti wreck, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Scuba diver and great rockfish (Scorpaena scrofa) on Brioni Steamship wreck, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Scuba diver and Yellow sponges (Aplysina cavernicola) on Brioni Steamship wreck, Vis Island, Croatia, Adriatic Sea, Mediterranean

Franco Banfi / Divers on zodiac travelling to diving place, Pico Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Scuba diver exploring Viana wreck, the hull is covered with spiral Tube-worm (Sabella spallanzani). Propeller of Viana wreck, a vessel set on fire in the Horta harbour. In attempt to contain the fire,...

Franco Banfi / Scuba diver on the Seagull wreck, Gaafaru wreck, Maldives, Indian Ocean, November 2011

Alex Mustard / Diver approaching the wreck of the bow of the USS Kittiwake (US Military submarine rescue vessel) Photograph was taken shortly after the wreck was deliberately sunk as an attraction for scuba divers,...

Alex Mustard / Divers on scooters exploring the wreck of the USS Kittiwake (US Military submarine rescue vessel) Photograph was taken shortly after the wreck was deliberately sunk as an attraction for scuba divers,...

Benoit Stichelbaut / Scuba diver entering water backwards from Honda Marine semi-rigid inflatable boat, 2004

Alex Mustard / Horse eye trevally / jacks (Caranx latus) school with a diver swimming beside the bow of the USS Kittiwake wreck, image was taken shortly after the wreck was deliberately sunk as an attraction for scu...

Michele Westmorland / Scuba diver exploring wreck of small yacht sunk in a hurricane. Grenada, West-Indies, Caribbean. Model released.

Francis Abbott / A scuba diving live-aboard boat at anchor off the Similan islands, off SW coast of Thailand, Andaman Sea.

Juergen Freund / Scuba diver jumping off boat into the sea Bahamas

Doug Perrine / Diver examines cannons on wreck of Russian missile frigate, Destroyer 356, renamed MV Capt Keith Tibbets, Cayman Islands, Caribbean

Doug Perrine / Divers at wreck of the tugboat 'Northwind', St Croix, US Virgin Islands, Caribbean

Doug Perrine / Diver explores wreck of Russian missile frigate, Destroyer 356, renamed MV Capt Keith Tibbets, Cayman Islands, Caribbean

GEORGETTE DOUWMA / Divers jumping from boat into the sea. Andaman sea, Thailand

David Fleetham / Scuba diver and schooling bluestripe snapper (Lutjanus kasmira) on a wreck off Kailua-Kona, Hawaii.

Onne van der Wal / Descending the rope to go scuba diving, British Virgin Islands, Caribbean, December, 2006.

Angelo Giampiccolo / Couple in wetsuits ready to go scuba diving from the stern of a power boat, with the transom doors open. Motorboat "One", Cantieri di Baia, off the coast of Baia, Naples, Italy.

Angelo Giampiccolo / Couple in wetsuits ready to go scuba diving from a power boat, with the transom doors open. Motorboat "One", Cantieri di Baia, off the coast of Baia, Naples, Italy.

Angelo Giampiccolo / Couple in wetsuits ready to go scuba diving from a power boat, with the transom doors open. Motorboat "One", Cantieri di Baia, off the coast of Baia, Naples, Italy.

Angelo Giampiccolo / Couple in wetsuits ready to go scuba diving from the stern of a power boat, with the transom doors open. Motorboat "One", Cantieri di Baia, off the coast of Baia, Naples, Italy.

Angelo Giampiccolo / Couple in wetsuits ready to go scuba diving from the stern of a power boat, with the transom doors open. Motorboat "One", Cantieri di Baia, off the coast of Baia, Naples, Italy.

Angelo Giampiccolo / Memorial on the Punta Papa Wreck, Ponza, Italy, in memory of a young diver who died scuba diving at the location.

Angelo Giampiccolo / Couple in wetsuits ready to go scuba diving from the stern of a power boat, with the transom doors open. Motorboat "One", Cantieri di Baia, off the coast of Baia, Naples, Italy.

Angelo Giampiccolo / Couple in wetsuits ready to go scuba diving from the stern of a power boat, with the transom doors open. Motorboat "One", Cantieri di Baia, off the coast of Baia, Naples, Italy.

Angelo Giampiccolo / Couple in wetsuits ready to go scuba diving from the stern of a power boat, with the transom doors open. Motorboat "One", Cantieri di Baia, off the coast of Baia, Naples, Italy.

Onne van der Wal / People returning to a catamaran after scuba diving, British Virgin Islands, Caribbean, December, 2006.

Roberto Rinaldi / A scuba diver with yacht in the background, Belize Model released.

Tom Vierus / Split level view showing bleached Acropora hard corals on Combe Reef with a dive boat on water surface, Viti Levu, Fiji, Pacific Ocean.