In the right-hand corner of Manta Bay sit The Crack, a 20 meter long, 8 meter wide and 11-meter-deep gash into the Nusa Penida rock face that has been gouged out by millions of years of wave action. With the clear visibility in the area this makes a great topographical dive as you can swim into The Crack and look up through the surface to the canyon rising up another 40 meters above you and even the possibility of seeing Manta's feeding. Surrounding the area is made up of sandy bottom, coral rubble, encrusting coral and coral bommies making it an ideal area for Nudibranchs, scorpion fish, stone fish and juvenile fish. During the cold season the area is frequented by wobbygong and bamboo sharks hiding in the crevices and overhangs and the occasional pod of dolphins coming through the bay. The Crack it is an ideal area for DSD's, Open Water and Advanced courses. Caution must be taken during high swell days as the surge in the area can be strong. Area has high boat traffic.