Alex Mustard / Diver swimming through wreck, mess hall of USS Kittiwake, US Military submarine rescue vessel. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea. January, 2018.

Alex Mustard / Diver swimming through wreck, compressor room of USS Kittiwake, US Military submarine rescue vessel. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea. January, 2018.

Alex Mustard / Bow of the USS Kittiwake wreck (US Military submarine rescue vessel) with diver. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

Will Watson / British Camp Iron-Age hill fort on the Herefordshire Beacon, Malvern Hills AONB, Herefordshire, viewed from Worcestershire, England, UK, August 2017.

Will Watson / Southern extension of British Camp Iron-Age hill fort on the Malvern Hills AONB, 2nd Century BC, Herefordshire, England, UK, August 2017.

Alex Mustard / Hawksbill turtle (Eretmochelys imbricata) with the USS Kittiwake (US Military submarine rescue vessel) wreck. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

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.

David Woodfall / Army and police in flooded street after February 2014 flooding, helping to provide support for the residents and supplying sand bags, Chertsey, Surrey, England, UK, 16th February 2014.

Franco Banfi / Diver exploring with scooter the bow with machine gun of the LST 349, a British Landing Ship Tank sunk on Febbruary 1944, Ponza Island, Italy, Tyrrhenian Sea, Mediterranean

Alex Mustard / A panoramamic composite of the USS Kittiwake wreck (US Military submarine rescue vessel) lying next to a coral reef. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.