Manta Point, south-west Nusa Penida, is where manta ray, tuna and tiger mackerel sometimes come in to feed. You have a good chance of seeing these pelagics, but it isn't guaranteed. The Bat Cave is on the north side of a small sheltered bay and, although the approach is from underwater, is open to the sky. A drift-dive along a wall heavily populated with lobsters, which may yield leopard shark and eagle rays comes after the Bat Cave. (note: early pick-up from your hotel).