Meet the site
Second Valley is one of the prettiest spots on the Fleurieu coast, a small cove framed by folded cliffs and a short jetty, and it is a long-standing shore dive for Adelaide divers. The Federation describes the classic dive as a walk around to the second bay on the southern side of the jetty, where three small caves, including a swim-through with a right angle in it, are cut into the cliff face. The Marine Life Network adds small caves near the old boat winches south of the jetty and two caves at the base of the cliff at the southern point of the second bay. Wikivoyage describes the headland as a fairly steeply sloping rocky reef of heavily folded sedimentary rock, probably shale or mudstone originally, dipping at about 25 degrees and running north-south, with a reef slope 15-40 m wide down to a sand bottom at about 9 m. Mixed kelp and other seaweeds grow at moderate density, and the rock shows through often enough to make the geology part of the dive. Fish life is often sparse, as the Federation candidly notes, but the site is known for occasional leafy and weedy seadragons in the weed and for small life in the caves and crevices: blue devils, wrasse, magpie perch, nudibranchs and crabs. It is a relaxing place to explore rather than a fish-soup dive. Second Valley suits Open Water divers comfortable with a walk and a rock entry, and snorkellers exploring the caves on a calm day. It combines naturally with Lasseter's Reef and the jetty, and is a short drive from Rapid Bay. Avoid it in any northerly or westerly swell.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Second Valley is recorded as Shore/Rock Platform in Fleurieu Peninsula & Victor Harbor. The listed access is shore. Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.
Topics flagged by the stored research
These are questions prompted by the existing notes, not a verified or complete hazard assessment.
- Lines and obstructions
- Discuss any known entanglement concerns and the suitability of the planned area.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
- Overhead environments
- Ask whether the plan stays entirely in open water. A wreck or cave listing is not permission or training to enter.
Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.
Questions, answered
Is Second Valley suitable for my certification?
The record lists Open Water. That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.
Can I book Second Valley through YouDive?
YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.
What you might see
Leafy seadragons (occasional), weedy seadragons (occasional), blue devilfish, wrasse, magpie perch, old wives, nudibranchs, crabs, mixed kelp
Location
Rocky headland and small bays south of the Second Valley jetty, with three small caves (including a right-angled swim-through) in the cliff face and a steep reef slope to 9 m sand.
Facilities nearby
Car park at the end of the access road, public toilets and changing room (no drinking water), Second Valley Caravan Park and cafe nearby; nearest air fills in Adelaide.
Before you make plans
Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.
Sources & further reading
sdfsa.netmarinelife.org.auen.wikivoyage.orgdivedb.netRecord updated 26 Sept 2026. Source claims are being reviewed.
