Alan Murphy/ BIA / Altamira Oriole (Icterus gularis), Texas

Alex Mustard / Diver exploring the wreck of HMS Scylla, which is colonized by Dead man's fingers (Alcyonium digitatum). Whitsands Bay, Cornwall, England. UK, July.

Andy Jackson / 2020VISION / Male Cuckoo wrasse (Labrus mixtus) swimming and looking at camera, with a diver in the background, Lochgary Wreck, Kirkwall, Orkney, Scotland, UK, June.

Michael Pitts / British Admiralty anchor - mid 1750's - possibly from the wreck of HMS Colossus - wrecked 1798. St Mary's Roads. Isles of Scilly. England, UK, August 2013.

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,Michael Pitts / Wreck of Aichi E13A, Japanese World War Two float plane, sunk by American fighters, Solomon Islands.

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.

Sue Daly / Diver on the wreck of HMNZS Canterbury, Bay of Islands, New Zealand. February 2013. Model released.

Sue Daly,Sue Daly / Jewel Anemones (Corynactis haddoni) colonising the wreck of HMNZS Canterbury, Bay of Islands, New Zealand, February 2013

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.

Michael Pitts / Caribbean reef sharks (Carcharhinus perezi) at night on wreck of the "'Ray of Hope'', Bahamas. July 2008.

Doug Perrine / Diver sitting in wreck of WWII Japanese fighter plane, Palau, Micronesia