In 1985, Robert Ballard the oceanographer, using a miniature diving bell complete with sophisticated underwater camera craft, discovered the long lost wreck of the White Star liner the Titanic, two miles deep in the north Atlantic. Two years later, using the same equipment he rediscovered the wreck of the World War II German battleship, the Bismarck. Since then, he has conducted dramatic underwater surveys of the lost World War II ships of Guadalcanal in the pacific, and most recently, the Cunard liner, the Lusitania, the ship whose sinking off the Irish coast brought the Americans into World War I.