Port Willunga

Port Willunga, Fleurieu Peninsula

By ScubaDownUnder Team · 2026-10-02

The cliffs at Port Willunga glow gold in the afternoon light, and below them, in shallow clear water, lie the bones of two pieces of history. A row of weathered timber pylons marches out from the beach, all that remains of a jetty that shipped grain and produce until storms tore it apart a century ago, and two hundred metres offshore rests the iron skeleton of the Star of Greece. For divers and snorkellers, this stretch of the Fleurieu Peninsula is a gentle, atmospheric dive over heritage reef and ruins, alive with the temperate fish of South Australia.

Port Willunga lies about thirty-five kilometres south of Adelaide, a picturesque beach beneath limestone cliffs on the Fleurieu Peninsula. The jetty pylons date from the 1860s, and the heritage-listed reef that the low tide exposes forms a natural marine reserve, while the wreck of the Star of Greece, a three-masted iron ship lost in 1888, lies a short way offshore. The combination of history, shallow clear water and easy beach access has made it one of the most popular shore-dive and snorkel spots south of Adelaide.

This is shallow, easy diving. The reef and the jetty pylons sit in just a few metres of water close to shore, with one nearby site dropping down a small vertical wall to a bottom around six to eight metres and usually thick with fish. The old pylons are encrusted with growth and shelter their own community, and the heritage reef is a low limestone structure cut with ledges. Divers and snorkellers can work the pylons, the reef and, on a calm day, swim out to the Star of Greece, which lies in shallow water two hundred metres off the beach. It is a site for a relaxed potter rather than a serious descent.

The reef and pylons are rich with the temperate life of the Fleurieu coast. Leafy seadragons drift through the weed, western blue groper patrol the reef, and old wives, sweep and zebrafish school over the limestone. The jetty pylons carry nudibranchs, crabs and invertebrate growth, southern rock lobster tuck into the ledges, and the whole site rewards a slow, close look. The shallow, sheltered water and the abundance of life make it as good a snorkel as a dive, and the seadragons in particular draw photographers.

Port Willunga is shallow and exposed, so it lives and dies by the weather. On a calm day, free of swell and wind, the water is clear and the diving easy and beautiful; when the swell is up, the shallow reef and the wreck become rough and the visibility drops. Water temperature ranges from around 14°C in winter to 21°C in summer, so a wetsuit suits the season, and the best diving is generally in the calm of summer. There is little current, and the shallow depth makes it benign, but timing a flat, clear day is the key to the site.

The Star of Greece is the historical draw, an evocative iron wreck within reach of a strong shore swimmer or a short boat trip, and a reminder of the coast's shipping past. The jetty pylons are a favourite for photographers, especially in the golden cliff light, and the heritage reef rewards a careful search for macro life. Above the water, the cliffs, the cafe and the beach make Port Willunga a full day out, and the site pairs naturally with the other Fleurieu shore dives.

Port Willunga is a dive about place as much as marine life. Golden cliffs, a century-old jetty reduced to pylons, an iron wreck offshore and a reef full of seadragons, all in shallow, clear water a short drive from Adelaide. On a calm day it is one of the most atmospheric and accessible dives in South Australia.

## Site Access and Logistics

Port Willunga is a shore dive about thirty-five kilometres south of Adelaide, on the Fleurieu Peninsula, with beach access below the cliffs and parking nearby. The reef and pylons are a short swim from the sand, and the Star of Greece lies two hundred metres offshore, reachable by confident swimmers or a short boat trip. Adelaide dive shops provide air, gear and advice.

The shallow, sheltered water suits divers from a beginner level and snorkellers, and the key is to dive on a calm day free of swell and wind, when the water is clear. A wetsuit suits the temperate water, and the heritage reef is a protected area, so divers leave it undisturbed. There is little current, but the shallow reef becomes rough quickly in a swell.

Air, gear and local advice are available from Adelaide and Fleurieu dive shops including [The Dive Shack](https://thediveshack.com.au/dive-sites/local-dive-sites-fleurieu-peninsula/).

## Sources

- The Dive Shack, local dive sites of the Fleurieu Peninsula: [https://thediveshack.com.au/dive-sites/local-dive-sites-fleurieu-peninsula/](https://thediveshack.com.au/dive-sites/local-dive-sites-fleurieu-peninsula/) - Scuba Divers Federation of South Australia, Fleurieu Peninsula dive sites: [https://sdfsa.net/sa-dive-sites/fleurieu-peninsula/](https://sdfsa.net/sa-dive-sites/fleurieu-peninsula/) - Fleurieu Peninsula Tourism, Port Willunga: [https://fleurieupeninsula.com.au/places-to-go/port-willunga](https://fleurieupeninsula.com.au/places-to-go/port-willunga) - Wander Explore Discover, Port Willunga: [https://www.wanderexplorediscover.com/post/port-willunga](https://www.wanderexplorediscover.com/post/port-willunga)