Meet the site
Roberts Shoal lies just east of the Cape Moreton lighthouse and is one of the most dramatic pieces of underwater scenery off Brisbane. The Adreno regional guide likens it to the landscape of a ruined cathedral, with arches, overhangs, caves and spires rising from sand at around 35 m to about 12 m below the surface. Most of the dive is spent around 20 m, weaving between the pinnacles and peering into the caves. It is very similar in terrain to Brennan Shoal immediately to its north, and charter operators often describe the two together: pinnacles and big caves, generally calm in terms of current but exposed to swell. The fish life reflects the open-ocean position. Schools of large pelagic fish, including trevally, kingfish and mackerel, patrol the edges, and large wobbegong sharks are common in the caves and under ledges. A giant cod has been reported at around 25 m. Sponges and soft corals coat the rock, and the cracks hold crayfish and moray eels. Visibility averages about 20 m. Because it is further round the cape than Flinders Reef and needs a calm day, Roberts Shoal is dived less often than the bay-side sites and is usually reserved for advanced divers on special outer-reef days. It rewards good buoyancy and navigation – the arches and caves are the highlight, and it is easy to lose track of depth when exploring the spires. On a clear winter day with light winds, it is one of the best dives in the Moreton area.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Roberts Shoal is recorded as Reef in Brisbane & Moreton Bay. 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.
- Other water users
- Ask about vessel activity, exclusion areas and the agreed surface arrangements.
- Planned depth
- Confirm the intended route and training requirements; the recorded maximum is not a target.
- 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 Roberts Shoal suitable for my certification?
The record lists Deep/Advanced + experience. 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 Roberts Shoal 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
Large wobbegongs, giant cod, schooling pelagics (trevally, kingfish, mackerel), crayfish, moray eels, reef fish, sponges and soft corals
Location
Reef of pinnacles, arches and caves just east of the Cape Moreton lighthouse, off the north-east corner of Moreton Island.
Facilities nearby
Departure facilities at Manly or Scarborough boat harbours.
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
adreno.com.ausupercatcharters.com.aumarinelife.org.auRecord updated 27 Sept 2026. Source claims are being reviewed.