South Bondi Reef

South Bondi Reef (Flat Rock) Dive Guide, Sydney

By ScubaDownUnder Team · 2025-07-15

South Bondi Reef is our name for the shore dive that Michael McFadyen calls Flat Rock, South Bondi. It sits in the small inlet immediately south of the southern end of Bondi Beach, reached from Wilga Street or Notts Avenue, and it is a shallow, rocky, kelp-covered dive with a low offshore reef, moray eels and a set of short caves where wobbegongs rest.

It needs a calm sea. McFadyen's rule is simple: look down on the site from the end of the street first, and if the seas are up at all, go elsewhere.

Almost everything published about this dive comes from McFadyen's page, which dates from the 1990s and is built around a sketch map he drew in 1992. We found no dive shop that currently lists guided dives here, so treat the route below as a starting point rather than a current survey.

## Cleaner Water Since 1991

Bondi's sewage once made this a hit-and-miss dive. McFadyen notes that before the Bondi Sewage Treatment Plant switched to a deep-water ocean outlet in July 1991, the North Bondi and Flat Rock sites could only be dived in the right weather conditions. The deep-water outlets at Malabar, North Head and Bondi discharge three to four kilometres offshore.

## The Dive

Enter from the rock platform and snorkel due east for 25 to 30 metres, where the water is about 6 metres deep, then drop down and keep heading east. The bottom starts as large rocks with sand patches, and after about 50 metres you reach sand. Ahead is a low reef of very large flat rocks covered in kelp, separated from the shoreline reef by about five metres of sand. Its southern side is mostly one big flat rock, while the northern end is a jumble of rocks with small swim-throughs and sand between them. McFadyen wonders whether this is where the site's name comes from.

Turn right and follow the edge of the shoreline reef south, checking the holes under the overhanging rocks. McFadyen finds plenty of moray eels and small cuttlefish here. After a short distance the reef edge turns east; about 20 metres further on, head due north over the sand to the flat reef and explore it, then carry on north over a small sand patch back onto the main reef. Don't go too far north: it is less interesting there and normally quite surgy.

Head back south with the rocks on your right. Near the point where the isolated reef comes closest to shore, turn west over the rocky bottom until you reach a vertical wall, and follow it to the left. What look like a few small overhangs are the entrances to three caves that run five to ten metres back towards the rock platform. The first two are stacked on top of each other, run about five metres, and are normally full of bullseyes, sometimes with a sleepy wobbegong. The longest is wide but low and nearly always holds one or more [wobbegongs](https://scubadownunder.com/blog/wobbegong-the-camouflaged-carpet-shark-of-australia); it opens into a large hole in the reef.

Treat the caves with caution. McFadyen was told in June 1999 that one of them had collapsed early that year, and he had not dived it since to confirm. Look in from outside unless you know their current state.

To finish, follow the wall to the right (west) and, where it disappears, head due west. After about 20 metres, or when the depth is about 6 metres, surface to check your bearings. The exit is usually easy, back onto the rock you started from.

McFadyen's 1992 map marks depths from 2 to 9 metres, so this is a shallow dive.

## Marine Life

Around the shoreline reef McFadyen lists snakeskin wrasse, yellow-finned pomfret, crimson-banded wrasse and some small blue gropers, along with the moray eels and small cuttlefish under the rocks and the wobbegongs and bullseyes in the caves. Elsewhere on the site look for common stingarees, crayfish, six-spined leatherjackets, red morwong, senator wrasse, maori wrasse and the other usual Sydney fish.

Leave the gropers be: NSW DPI says taking eastern blue groper by any method is prohibited in NSW waters.

## Conditions

McFadyen says the sea must be fairly calm to dive here. Favourable conditions are a slight south-easterly swell with otherwise calm seas, and the northern end of the site is normally surgy.

No published source gives visibility or temperature figures for this site. Across more than 1,700 Sydney dives, McFadyen found visibility best in winter (June especially) and worst in October and November, with better than 10 metres on half of all dives. His Sydney water temperatures average 15.7°C in August and September and 19.7°C in March and April.

The site lies north of the Bronte-Coogee Aquatic Reserve, which NSW DPI says runs from the southern end of Bronte Beach to the Coogee rock baths, so that reserve's rules do not apply here. For shore dives inside the reserve, see our guides to [Gordons Bay](https://scubadownunder.com/dive-sites/gordons-bay) and [Clovelly](https://scubadownunder.com/dive-sites/clovelly).

## Site Access and Logistics

- **Getting there:** drive to the end of Wilga Street or Notts Avenue, Bondi. McFadyen warns that parking can be difficult to find at any time. - **Check first:** look down onto the inlet from the top before kitting up. If the seas are up at all, dive somewhere else. - **Entry and exit:** walk down the stairs onto the pathway that runs around the shore. McFadyen's preferred entry and exit is to the right of the stairs from Wilga Street: climb down onto the rock platform, the flat rock that may give the site its name. Exit onto the same rock. - **Operators:** none that we could find guides this site. [Dive Centre Bondi's guided shore dives](https://divebondi.com.au/products/guided-shore-dive) go to Gordon's Bay, Clovelly, North Bondi, Bare Island, Little Bay, Kurnell and Clifton Gardens, chosen to suit the day's conditions, so plan this one as a buddy dive. - **Experience:** no source gives a certification level. The depths are modest, but the rock-platform entry and the need for calm seas suit divers who are comfortable judging conditions for themselves.

For more shore and boat diving around the state, see our guide to the best places to dive in [NSW](https://scubadownunder.com/blog/best-places-to-dive-in-nsw).

## Sources

- [Michael McFadyen's Scuba Diving: Flat Rock, South Bondi](https://www.michaelmcfadyenscuba.info/viewpage.php?page_id=280) - [Michael McFadyen's Scuba Diving: Visibility and Wave Averages in Sydney](https://www.michaelmcfadyenscuba.info/viewpage.php?page_id=744) - [Dive Centre Bondi: Guided Shore Dive](https://divebondi.com.au/products/guided-shore-dive) - NSW Department of Primary Industries and Regional Development: Bronte-Coogee Aquatic Reserve (dpird.nsw.gov.au)

Header photo: The rocky shore and coastal walk just south of Bondi Beach, looking north towards the beach, by -wuppertaler, [CC BY 4.0, via Wikimedia Commons](https://commons.wikimedia.org/wiki/File:AUS_Sydney,_Waverley,_Bondi_Bay_005.jpg).