Fish Rock is a critical habitat area for the Grey Nurse sharks, which live here in large numbers all year round. Created by a fault in the island, Fish Rock Cave runs from the deeper seaward entrance at 24 metres, 125 metres through the rock emerging into the blue, fish-filled, silhouetted shallower entrance fringed by pink gorgonian corals at 12 metres. Gear up commences at the dive shop around 7.30am. Return to the shop around 1pm after the double dive.