Crystal blue waters and sailboats anchored off Necker Island; Neck Island, British Virgin Islands

Spain, People in small boat going out to their yacht off La Basse beach; Ibiza

Diving into the sea off rocks along the coast; Rio de Janeiro, Brazil

Diver at the entrance to a cavern off the island of Gato, Bohol Sea, Philippines

A photographer lines up with his smart phone in a housing on this Green sea turtle (Chelonia mydas) off the coast of Maui; Hawaii, United States of America

Tourists jump off a boat into the freezing waters of the Arctic Ocean; Svalbard, Norway

USA, Hawaii Islands, Big Island, Two scuba diving boats anchored offshore among reefs; Kohala Coast

Gray reef sharks (Carcharhinus amblyrhynchos) and divers at a dive site named Vertigo, off the island of Yap; Yap, Micronesia

A group of scuba divers from Big Island Divers hanging out next to a permanent mooring at the Golden Arches dive site off the Kona coast; Island of Hawaii, Hawaii, United States of America

Scuba divers from Big island Divers swimming along the edge of a coral reef off the Kona coast; Island of Hawaii, Hawaii, United States of America

Scuba divers from Big island Divers swimming along the edge of a coral reef off the Kona coast; Island of Hawaii, Hawaii, United States of America

A Man Dives Into The Sea From A Yacht Anchored Off Gibraltar.