Meet the site
Flinders Reef is Brisbane's signature dive: a small coral reef sitting in open ocean just north of Cape Moreton that holds more coral species than any other subtropical reef on Australia's east coast. Charter operators like to say it has more varieties of coral in one small area than any single reef on the Great Barrier Reef, and with more than 100 hard and soft coral species and over 175 recorded fish species it genuinely looks like a piece of the tropics transplanted to South East Queensland. It has been a marine park since 1998 and is now a Marine National Park (green) zone, so nothing may be taken and the fish show it. The reef is compact, rising from about 20-28 m of sand to a few rocky heads that break the surface at low tide. The western side is the sheltered, shallow side, with coral gardens at 5-12 m of plate, staghorn and brain corals, soft corals, gorgonians and sponges, cut by sand gutters. The eastern side is more rugged, with walls, ledges, small caves and pinnacles dropping to the mid-twenties. Much of the dive is spent in 6-16 m, which makes Flinders suitable for new divers and good for long, relaxed dives. The big draw is the turtle cleaning station on the western side, where green and loggerhead turtles queue over a bommie to be picked clean by surgeonfish and cleaner wrasse; divers who stay low and still get close-range views. Around the reef you will see schools of sweetlip, trevally, batfish, surgeonfish, parrotfish and wrasse, plenty of wobbegongs tucked under ledges, eagle rays passing over the sand, leopard sharks and manta rays in summer, and occasional grey nurse sharks and whaler sharks on the eastern side. In winter humpback whales migrate past and are often heard, and sometimes seen, during the dive. Look closely for nudibranchs, egg cowries, feather duster worms and anemonefish. Flinders is usually combined with the Cementco wreck or Gotham City on a two-dive day, and it is the natural first outer-Moreton trip for divers who have done the bay sites. Because the crossing is long, it rewards picking a settled day.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Flinders Reef 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.
- 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.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
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 Flinders Reef suitable for my certification?
The record lists Advanced 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 Flinders 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
Green and loggerhead turtles (cleaning station), wobbegongs, leopard sharks (summer), manta rays (summer), grey nurse sharks (occasional), whaler sharks (eastern side), eagle rays, sweetlip, trevally, batfish, surgeonfish, parrotfish, wrasse, anemonefish, egg cowries, nudibranchs, feather duster worms, humpback whales (June-October), 100+ coral species
Location
Small isolated coral reef about 5 km north-west of Cape Moreton, off the northern tip of Moreton Island, inside Moreton Bay Marine Park; the closest true coral reef to Brisbane.
Facilities nearby
Departure facilities at Manly Boat Harbour (cafes, toilets, parking) or Scarborough Boat Harbour; Mooloolaba Wharf for Sunshine Coast operators.
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
supercatcharters.com.auunidive.orgmarinelife.org.aunigelmarshphotography.combrisbanescuba.auscubashanediving.com.ausunreef.com.auadreno.com.auRecord updated 27 Sept 2026. Source claims are being reviewed.