Situated 25 km (15 miles) north of the Scottish mainland, the Orkney Islands are located on the same latitude as southern Greenland, Alaska and Leningrad, however Orkney is bathed in the warm waters of the North Atlantic Drift that first started out as the Gulf Stream in the Caribbean. Hence, a profusion of marine life, water that rarely gets too cold and mild winters, whilst the islands are inevitable windy, the almost landlocked bay of Scapa Flow is sheltered for diving all year round. The Orkney Islands are created by submergence and give the impression of tipping westwards into the sea. There are great sea stacks, arches, caves and caverns all around the coast, some of which are world famous such as the Old Man of Hoy, and they have a total land mass of around 971.25km2 (375 square miles).

German ocean liner General von Steuben was torpedoed by a Russian submarine in 1945 taking thousands of refugees fleeing the advancing Red army with her to the bottom. She now rests at 72 meters in the Baltic Sea making it one of the most impressive Baltic wrecks and daunting technical dives.