South Head is the southern headland of the entrance to Sydney Harbor, at the north of the suburb of Watsons Bay. Hornby Lighthouse, the third oldest lighthouse in New South Wales, is located in South Head.
Apart from breathtaking views of the Sydney CBD and the Pacific Ocean, there are several excellent dive sites all along this section. The Gap is one of them. The spot is a wall that drops from 10 m/33 ft to 15 m/49 ft and it is appropriate for more experienced divers due to its depth.
Water temperature is up to 21°C / 69.8°F in summer and early autumn months and between 14-18°C / 57.2-64.4°F in winter. Divers are able to see along the wall, sponge covered boulders, weedy sea dragons, leather jacket, pelagic fish, blue grouper and turtles. Note: book a boat dive in one of the many scuba schools located in the area.