Meet the site
Gretas Reef is a rocky reef near the Gold Coast Seaway entrance, described by Gold Coast Dive Adventures as several long boulders that run parallel to each other with a number of small to large colourful bommies. The boulders sit in 16-20 m on a sand bottom at about 20 m, and the parallel layout makes navigation easy: divers can follow one line of boulders out and another back, detouring to the bommies along the way. The operator rates it suitable for open water divers. The bommies are covered in sponges, soft corals and feather stars, and they provide shelter for a good range of reef life. Nudibranchs are a highlight for macro enthusiasts, and moray eels, lionfish and wobbegongs occupy the gaps between boulders. On the sand, divers find flathead and sole camouflaged against the bottom. Larger visitors are part of the appeal: Gold Coast Dive Adventures notes that dolphins and sharks are seen feeding on the reef, attracted by the schools of baitfish that gather over the rocks. Visibility is typically 8-20 m and is at its best after southerly winds and in the cooler months. Gretas is close to the Scottish Prince and Migaloo Reef, so it is easy to combine with either on a double dive from Runaway Bay. For new divers who have done the Seaway and the Scottish Prince, it is a good step up to an offshore reef dive at a comfortable depth, and for photographers the bommies offer colourful subjects. Winter water rarely drops below 19°C.
What you might see
Nudibranchs, feather stars, flathead, sole, moray eels, lionfish, wobbegongs, baitfish schools, dolphins and sharks (feeding)
Location
Rocky reef of parallel boulder lines and colourful bommies in 16-20 m near the Gold Coast Seaway entrance.
Facilities nearby
Runaway Bay Marina for departures.
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
goldcoastdiveadventures.com.auRecord updated 27 Sept 2026. Source claims are being reviewed.