Kurnell is a suburb in southern Sydney, at about 22 km/14 mi in the south of Sydney's CBD (Central Business District). Kurnell is on the southern headland of Botany Bay, just opposite the suburb of La Perouse. Kurnell boasts some of Sydney’s top dive sites.
The Steps is considered to be a great shore dive spot and it is very popular among divers, snorkelers and fishermen. The marine life is abundant with lots of weedy sea dragons, giant cuttlefish, octopus, moray eel, blue groper, eagle rays, Port Jackson shark, nudibranch, yellowtail and cat fish to name just a few. The average depth here is at 9 m/29.5 ft and the maximum depth is at 14 m/45.9 ft.
Visibility is generally considered to be good and the best time to snorkel is on an incoming tide. 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. It is a crowded spot, especially during weekends.
Last but not least, The Steps is located in the Kurnell National Park. You are required to pay an entry fee to the park.
Note: be careful of other snorkelers, divers and fishing lines.