Hop aboard the M. V. Key Largo Princess 2 for our daily two-hour tours as we cruise through the waters of the John Pennekamp Coral Reef State Park to view the exciting, beautiful, underwater world of the Key Largo National Marine Sanctuary.The Key Largo Princess is a 75-foot luxury, coast guard certified, glass bottom boat, which can hold up to 140 passengers. Relax in the comfortable air-conditioned cabin as you peer into the depths of the Molasses reef or enjoy a panoramic view of the many colors of the sea from our spacious sun deck. Youll love the scenery the John Pennekamp Coral Reef State Park (the only undersea park in the United States) has to offer.