Jack Dykinga / Wrecked ship with cormorant colony, on Namibia's skeleton coast, Dorob National Park, Namibia. July 2013.

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.

Andy Jackson / 2020VISION / Male Cuckoo wrasse (Labrus mixtus) feeding on a Sea urchin (Echinoidea), Lochgary Wreck, Kirkwall, Orkney, Scotland, UK, June.

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

David Fleetham / Diver exploring the wreck of the Sea Tiger off Waikiki, Oahu, Hawaii. August 2007. Model released

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

Andy Jackson / 2020VISION / Two Ballan wrasse (Labrus bergylta) swimming near the wreck of the Oceana, Eday, Orkney, Scotland, UK, June.

Andy Jackson / 2020VISION / Ballan wrasse (Labrus bergylta) swimming near the wreck of the Endeavour, Kirkwall Bay, Orkney, Scotland, UK, June.

Andy Jackson / 2020VISION / Three Ballan wrasse (Labrus bergylta) feeding on a Sea urchin (Echinoidea), Fetlar, Shetland, Scotland, UK, June.

Andy Jackson / 2020VISION / Butterfish (Pholis gunellus) swimming alongside the wreck of the Endeavour, Kirkwall Bay, Orkney, Scotland, UK, June 2011.

Andy Jackson / 2020VISION / Male Cuckoo wrasse (Labrus mixtus) swimming in and out of a crevice in the Lochgary wreck, Kirkwall, Orkney, Scotland, UK, June 2011.

Andy Jackson / 2020VISION / Pair of Cuckoo wrasse (Labrus mixtus) and a Ballan wrasse (Labrus bergylta) feeding on a Sea urchin (Echinoidea), Lochgary Wreck, Kirkwall, Orkney, Scotland, UK, June.

Andy Jackson / 2020VISION / Divers exploring the weck of the Jane, Fetlar, Shetland, Scotland, UK, July 2012.

Andy Jackson / 2020VISION / Male Cuckoo wrasse (Labrus mixtus) swimming near the Endeavour wreck, Kirkwall Bay, Orkney, July 2012.

Andy Jackson / 2020VISION / Ballan wrasse (Labrus bergylta) swimming near the wreck of the Jane, Fetlar, Shetland, Scotland, UK, June.

Andy Jackson / 2020VISION / Ballan wrasse (Labrus bergylta) swimming near the wreck of the Oceana, Eday, Orkney, Scotland, UK, June.

Michael Pitts / Shipwrecks on the Island of Mauritius.

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

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 / 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

Jeff Rotman / Diver exploring Bridge on Saskatchewan shipwreck, an artificial reef covered with Giant Plumose Anemone (Metridium farcimen), Vancouver Island, British Columbia, Canada, Pacific Ocean Model released.

Jeff Rotman / Diver exploring Bridge on Saskatchewan shipwreck, an artificial reef covered with Giant Plumose Anemone (Metridium farcimen), Vancouver Island, British Columbia, Canada, Pacific Ocean Model released.

Tony Phelps / Geoffroy's horseshoe bat (Rhinolophus clivosus) roosting in shipwrecked ship. Noup, Namaqualand, Northern Cape, South Africa

Alex Mustard / An Electric Ray (Torpedo panthera) swimming around a shipwreck (Gubal Island barge) at dusk. Gubal Island, Strait of Gubal, Egypt. Red Sea

Tim Laman / Golden damselfish (Amblyglyphidodon aureus) in front of a seafan growing from part of the wreck of the ship Liberty, Tulamben, Bali, Indonesia.

Francis Abbott / Wreck of fishing vessel 'Santa', scuppered by Spanish authorities in '83 following smuggling scandal. Off coast of Menorca

Shane Gross / Spotted eagle rays (Aetobatus narinari) through a large window on the wreck of the former mine sweeper C-56 Juan Escutia. Cancun, Mexico.