Atlantis Submarines is a Canadian passenger submarine company. The company currently has 12 submarines and operates undersea tours in Grand Cayman, Barbados, Aruba, Guam, St. Thomas, Cozumel and in Hawaii at Kona, Maui and Oahu. The Atlantis XIV, which sails from Waikiki Beach, Hawaii, accommodates 64 passengers and is the world's largest passenger submarine.