Alex Mustard / A fisherman swims down to touch the statue of Christ Of The Abyss (Cristo degli abissi) for good fortune, in the Marine Protected Area of Portofino (Area Marina Protetta, Portofino), Liguria, Italy. M...

Richard Du Toit / Aerial photograph of container ship near Cape Town Harbour, Atlantic Ocean, South Africa, Western Cape Province, March 2010

Franco Banfi,Franco Banfi / Anchor on Wreck Vassilios T, Vis Island, Croatia, Adriatic Sea, Mediterranean

Michael Pitts,Michael Pitts / Engine room ventilator shafts of oil tanker 'Seiko Maru'. Sunk in Chuuk Lagoon 17/18th February 1944, Chuuk Lagoon, Pacific

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.

Florian Möllers / Arctic expedition cruiseship M/S Stockholm in heavy sea and gale winds at Sarkapp (South Cape), Svalbard, Norway, July 2012

Steven Kazlowski / Crew bleeds a full deckload of Pacific cod fish (Gadidae family) before putting them in salt water tanks, on the fishing trawler Western Dawn, Gulf of Alaska, USA. No release available.

Brent Stephenson / A cruise ship heads back up the Beagle Channel towards Ushuaia at the end of an Antarctic cruise. Beagle Channel, Tierra del Fuego Archipelago, South America, December.

Eric Baccega / View across the bow of the Lyubov Orlova ship, moving through pack ice at dawn, off the coast of Devon Island. Nunavut, Canada, August 2010

Piper Mackay / Container freighter travelling through the Panama canal, Panama, November 2008

Dan Burton / Aerial view of the shipwrecked 'Napoli' with tugs and oil spill visible on water's surface, near Sidmouth and Branscombe, Devon, UK, 2007

Gerry Ellis / Logs being loaded on ships bound for China, Rajang River, Sarawak, Borneo, Malaysia