A boat comprises an elevator and a boat hull having a deck and defining a dive opening. The dive opening extends vertically from the deck to the water and defines an enclosed passageway having upper and lower openings. Depending on the dive opening's location in the boat hull, the passageway may or may not be enclosed on all sides. Means are included for selectively moving the elevator between a raised configuration above the dive opening and a lowered configuration by passing through the passageway. A floor of the elevator is adjacent the boat hull deck when the elevator is at the raised configuration, and the elevator floor is below a water surface when the elevator is at the lowered configuration so a user may easily travel between the water and the elevator. Means for actuating the means for moving the elevator are preferably accessible from inside and outside the elevator.