Bondi Wall is a straightforward, scenic wall dive off the northern headland of Australia's best-known beach. The stretch of coast from the Harbour south to Bondi is high sandstone cliff and the seabed mirrors it: a flat sand plain at 30–34 m, a rock shelf that rises to 27 m, and then a wall that climbs in one go to a plateau at 20–21 m. The wall runs roughly north–south for several hundred metres, meandering slightly, with a few places where it steps onto an intermediate ledge rather than dropping cleanly.

It is not a tall wall – six metres at most – but its length and the way it is undercut in places give it real presence. The sponge cover is the attraction: the face and the ledges are thick with encrusting and finger sponges, sea tulips and gorgonians, and the site is one of the better nudibranch hunting grounds on the Eastern Suburbs coast. Weedy seadragons are seen occasionally in the kelp along the plateau edge.

The fish life is the weak point – McFadyen notes it is visually exciting but lacking in fish – though silver sweep and yellowtail school above the wall and blue groper and sergeant baker are resident. The site only became diveable in the modern sense after July 1991 when the Bondi sewage treatment plant was connected to the deepwater ocean outfall four kilometres offshore; before that the North Bondi area was effectively off limits. It is dived from charter boats as the shallower second dive of the day, and with the plateau at 21 m it still calls for reasonable air consumption and an advanced certification.

Good for photographers wanting sponge and nudibranch macro, and for anyone who wants to dive under the Bondi skyline.

Boat only. From Sydney Harbour run south about 6.5 km past The Gap, Diamond Bay and Dover Heights to the North Bondi headland (Ben Buckler); allow 25–35 minutes from Rose Bay. From Botany Bay it is about 12 km north.

Approach from seaward: the sounder shows 30–34 m of flat sand, then the shelf comes up to 27 m and the wall to 21 m. The floor is flat with few anchor holds so drop the pick on the 21 m plateau and check it on descent. Dive Centre Bondi and Pro Dive Coogee run charters; there is no shore access.

Completely exposed to east and south swell and to the north-east sea breeze; anything over 1.5 m makes anchoring on the featureless plateau unreliable and the safety stop unpleasant. Current running north or south along the wall is common in summer after north-easterlies and can be strong; carry an SMB and be prepared to drift. Best in the morning after a few days of westerlies in autumn and winter when visibility reaches 20 m.

Heavy rain and the old sewage plume no longer apply since the 1991 deepwater outfall, but visibility still drops for a day or two after east-coast lows.

Descend to the plateau at 21 m and drop over the wall to 27 m. Follow the foot of the wall north for 10–12 minutes examining the overhangs and the intermediate ledges, then return south along the top edge at 21–22 m looking for seadragons and nudibranchs in the kelp. Safety stop on the anchor line; no shallow reef is available.

Dive Centre Bondi (regular weekend charters), Pro Dive Coogee and Frog Dive; usually the second dive after The Colours or paired with North Bondi.