Meet the site
The Glenelg Tyre Reef is part of the same offshore artificial reef complex as the Dredge and Barge, and is one of South Australia's early experiments in building fish habitat. According to the Marine Life Network, the program followed an American scientist's advocacy of artificial reefs around 1970; a first attempt off Henley Beach failed when storms scattered the material, and around 25,000 tyres were then deployed off Glenelg in the early-to-mid 1970s, with the tetrahedral modules seen today set in 1983. The reef is a field of tyre tetrahedrons and bundles spread over sand at about 18 m. They are low, relatively uniform structures, so the dive is less about scenery and more about what lives in and around them. The tyres are covered in sponges and small invertebrates and act as shelter for King George whiting, bullseyes, strongfish, silver drummer and old wives, while spider crabs, cuttlefish and nudibranchs are regularly found. Divers also report a fair collection of lost anchors, testament to the site's popularity with fishers. The modules have deteriorated over the decades and some straps have perished, leaving loose tyres and strapping that can snag equipment. Because the modules look much the same, it is easy to lose track of the anchor, so a compass is essential. This is not a destination dive in itself, but it is a useful alternative when the wrecks are busy, a relaxed second dive at a similar depth, and an interesting look at how fish have colonised man-made structures on an otherwise featureless seabed. It suits divers comfortable with open-water boat diving and navigation in variable visibility. Local shops note that large sharks, including white sharks, have occasionally been reported in the area during spring and summer salmon runs, as they are elsewhere off Adelaide.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Glenelg Tyre Reef is recorded as Artificial Reef in Adelaide Metro. The listed access is boat (day trip). 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.
- Current and timing
- Ask how the operator assesses the current window for the actual route. Historical tide notes are not a departure instruction.
- Other water users
- Ask about vessel activity, exclusion areas and the agreed surface arrangements.
- Lines and obstructions
- Discuss any known entanglement concerns and the suitability of the planned area.
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 Glenelg Tyre Reef 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 Glenelg Tyre Reef 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
King George whiting, bullseyes, strongfish, silver drummer, old wives, spider crabs, cuttlefish, nudibranchs, wobbegongs, sponges
Location
Field of tyre tetrahedrons and modules on sand in about 18 m, 5 km west of Glenelg and about 180-500 m south-east of the Dredge and Barge.
Facilities nearby
West Beach boat ramp (toilets, trailer park).
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
seawolves.org.ausdfsa.netthediveshack.com.aumarinelife.org.auen.wikivoyage.orgdivedb.netRecord updated 26 Sept 2026. Source claims are being reviewed.