South Australia dive sites
Jetty diving, leafy seadragons, the giant Australian cuttlefish aggregation, and Australia's most important freshwater cave-diving region.
| Water temperature | Roughly 19–22°C in summer and 13–16°C in winter along the coast. Mount Gambier's freshwater sites sit near 15–17°C year-round. |
|---|---|
| Visibility | Jetty sites commonly 5–15 m and weather-dependent. Mount Gambier's freshwater sites can offer exceptional clarity, sometimes well beyond 30 m. |
| Season | Coastal diving is year-round. The Whyalla cuttlefish aggregation runs approximately May to August. Cave diving is year-round but access is governed by CDAA qualification and landowner permission. |
| Sites documented | 12 |
Adelaide
The state's hub for training, equipment, servicing, fills and technical education.
Fleurieu Peninsula
Rapid Bay, Second Valley and Port Noarlunga — accessible shore diving and leafy seadragons.
Port Noarlunga ReefA shore-accessible aquatic reserve reef reached via a jetty — South Australia's main training site.
Rapid Bay JettySouth Australia's best-known leafy seadragon site, beneath a long jetty on the Fleurieu Peninsula.
Second ValleyDramatic rock formations and a sheltered shore entry on the Fleurieu Peninsula.Yorke Peninsula & Edithburgh
Edithburgh jetty — one of Australia's premier muck and macro dives.
Whyalla
The giant Australian cuttlefish aggregation — one of the world's genuinely unique marine events.
Port Lincoln
Shark cage tourism, sea lion swims and offshore island diving — categories that need separating.
Mount Gambier
Australia's cave-diving capital — freshwater sinkholes of international significance, governed by CDAA.
Ewens PondsThree shallow spring-fed ponds connected by channels — a drift dive through crystal-clear freshwater.Kilsby's SinkholeA limestone sinkhole with water so clear the experience is closer to flying than diving.Piccaninnie PondsA karst spring of extraordinary clarity, with the Cathedral chamber and a chasm beyond 100 metres.Tank CaveOne of the longest underwater cave systems in Australia — advanced CDAA qualification only.