Atlantis Submarines International, Inc., the company responsible for taking more than 11 million passengers on undersea adventures aboard its 48 and 64 passenger submarines. A fleet larger than that of many national navies, Atlantis subs are now found in Grand Cayman, Barbados, St. Thomas, Aruba, Guam, Cozumel, and on the Hawaii Islands of Hawaii, Maui and Oahu.