Tabbagai Point is, in McFadyen's words, an excellent dive site, and the wall that defines it is one of the most dramatic features on the Kurnell coast. Close to the rock platform the reef starts at just 3–4 m and drops to 17 m in a single vertical plunge, running north–south until it reaches the point, where it swings to the north-west. The face of the wall is broken by a couple of dead-end gullies and a large cave, and below it lies a field of large boulders full of small overhangs, caves and a few swim-throughs.

Further out a secondary wall drops from 20 to 23 m and is more pronounced towards the north. The main wall carries attractive gorgonians and sea squirts, eastern blue devilfish occupy many of the caves, and kingfish, silver sweep and cuttlefish are common. The site has a chequered recent history.

In 2008 construction of the Kurnell desalination plant's intake and outlet structures took place just offshore, and the mooring anchors of the construction vessels did huge damage to the deeper boulder area – McFadyen describes large sections of broken rock and deep gouges across the sponge and kelp gardens. Fortunately the shallower inshore section, the most interesting part of the site, appears to have escaped damage, and the wall and caves remain in excellent condition. Because the wall rises almost to the surface, divers can tailor the depth to their experience and finish the dive with a shallow, fish-filled safety stop against the rock.

As with the rest of the Kurnell coast there is no regular charter, so this is a private-boat or club dive from Botany Bay or Port Hacking. It suits Advanced divers and confident Open Water divers who can handle surge near the platform.

Boat only – the Kurnell cliffs are sheer and in Kamay Botany Bay National Park, with no practical shore entry. From Botany Bay, launch at Kyeemagh (Cooks River), Foreshore Road or Bonna Point (Silver Beach, Kurnell), run out past Captain Cook's Landing Place, Inscription Point and The Leap, then turn south along the cliffs; from Port Hacking (Gunnamatta Bay/Tonkin Park or Lilli Pilli ramps) run out past Bass and Flinders Point and north-east along Bate Bay past Cronulla Beach and Cape Baily. From Botany Bay head south past Cape Solander; from Port Hacking head north past Cronulla Beach and Cape Baily – 15–20 minutes either way.

McFadyen's GPS is 34° 01' 34.5" S 151° 13' 52.5" E. Running in, the depth comes up from about 23 m to 20 m, then gradually to 17 m and about 13 m near shore; anchor in 17–20 m.

Tabbagai Point is fully exposed to north-east, east and south-east swell, and the shallow top of the wall beside the rock platform surges heavily in anything over about 1 m. Choose calm days, ideally winter westerlies. Visibility is generally better than at the bay entrance, but big ebbs after rain still carry bay water south.

The desalination intake moorings nearby are a reminder that construction and maintenance vessels occasionally work the area.

From the anchor in 17–20 m swim west to the main wall and follow it north–south, working up and down its face from 17 m towards the rock platform, and into the gullies and the large cave. Near the point the wall turns north-west. Return along the boulder field to the anchor, finishing shallow on the wall for a safety stop.

No regular charter – private boat or dive-club (St George Scuba Club) only