Reef Formation: a vertical reef wall that runs south to north parallel to Ngemelis Island. The reef then turns toward the open sea and stretches out from East to West, creating a plateau at 45 to 60 feet (15 to 20 meters). Most dive magazines rate the Blue Corner as the single best dive in the world. The formation of the reef, sheer walls and the large number of schooling fish make it a truly unique experience. There are three mooring buoys located along the reef. The eastern buoy, the central buoy and the western buoy. You can dive this site from two different directions, depending on the current. Generally, divers will begin the dive while their boat is moored to either the eastern or western buoy. The central buoy is rarely used to start the dive.