South Point is the southernmost tip of the Australian mainland, a bare granite headland at the bottom of Wilsons Promontory that walkers reach after a long day from Tidal River and boats reach only in settled weather. Scuba Doctor lists a 5–50 m reef dive here and describes two quite different dives. On the western side of the point is a shallow bay where the diving is easier, over weed-covered boulders scattered with flotsam and shipwreck debris; this is the anchorage and the dive most visiting boats do, at 5–15 m, poking among the kelp-covered granite for the small photographic subjects the listing mentions – nudibranchs, sea spiders, decorator crabs, anemones and the encrusting growth under the boulders – and for the fragments of iron, fittings and glass from the many vessels that have come to grief on the point over two centuries.

Heading south from the point, by contrast, the terrain descends rapidly to 50 m, and the reef becomes a current-swept slope of granite steps and boulders with the sponge, zoanthid and gorgonian cover of the outer Prom and the schools of perch, sweep and boarfish that go with it; this deeper dive is for slack water and experienced divers only, with a live boat above. Fur seals from the Anser Group and Kanowna, 3 km to the south-west, patrol the point, and white sharks are known in the area. Fenwick Bight, 1.3 km to the east, and Sea Eagle Bay Rocks, 4 km north-west, are the nearest neighbouring sites.

South Point is dived rarely – it is far from any launch and rarely calm – but for a boat working the southern Prom it offers a sheltered second dive in the western bay after Kanowna or Skull Rock, and the satisfaction of having dived the bottom of the continent.

Boat only. The nearest launch is the Tidal River beach ramp at the western end of Norman Bay (4WD beach launch, key and deposit from the Parks Victoria office; needs several people and calm surf), from which the western islands are 5–12 km. Larger trailer boats launch at Port Welshpool (sealed ramp, Corner Inlet) and run about 50–60 km around South East Point – 1.5–2 hours – or at Sandy Point (Waratah Bay, beach ramp) and run 35–45 km south-east.

Sites are exposed to Bass Strait and require settled weather, a seaworthy boat, radio, and self-sufficiency: there is no rescue or refuelling closer than Port Welshpool. South Point is about 11 km south-east of Tidal River along the exposed western Prom coast, or 45 km from Port Welshpool around South East Point. Anchor in the shallow bay on the western side of the point in good weather; the deep reef to the south is a live-boat dive.

Best with calm seas, no swell and no wind; light offshore south-westerly to westerly winds may be acceptable for the western bay, but avoid moderate to strong onshore south-easterly to south-westerly winds. Slack water is recommended because of strong currents off the point and the depth to the south. The point is the meeting place of the eastern and western Prom weather and is rarely calm; autumn high-pressure days are the best hope.

For the standard dive, anchor in the western bay and explore the weed-covered boulders and wreck debris at 5–15 m, working towards the point with the rock on one shoulder and turning before the current at the tip. For the deep dive, drop a shot south of the point and follow the reef down towards 50 m on slack water, turning early and ascending under an SMB for a live-boat pick-up.

No dive charter operates at Wilsons Promontory. Sites are dived from club and private trailer boats – Dive La Trobe, VSAG, Melbourne University Underwater Club and Dive Victoria Group run occasional camping-and-diving trips – launching at Tidal River (beach launch, permit/key from Parks Victoria), Port Welshpool or Sandy Point. Wilsons Promontory Cruises (Port Welshpool) runs sightseeing cruises to Skull Rock and the islands but no diving.