Coral Safari Semi Submarine is one of the best ways to explore the deep seas without getting wet. The crystal clear waters surrounding the North Bay island presents a wonderful opportunity to view the dense coral population surrounding the island, along with hordes of fishes residing in them. One of the best things about Semi Submarine is that there are no constraints on the level of deep waters it can explore. Unlike Scuba Diving and Glass Bottom Boats, semi-submarine can explore much deeper seas, where you can find unique species of fishes like large tunas and manta rays.