Flat Rock is an exposed offshore reef pinnacle north of North Stradbroke Island (Minjerribah) in Moreton Bay, accessible only by boat from Brisbane or the Gold Coast. This rocky outcrop rises from the seabed to just beneath the surface, surrounded by deep gutters, bommies, and sandy patches that attract large pelagics, rays, and schooling reef fish. The site's famous "Shark Alley" is a deep channel where grey nurse sharks, wobbegongs, and bull rays are regularly encountered. Conditions are heavily weather-dependent with strong tidal currents, making this a wild, adventurous snorkel destination for experienced ocean swimmers only.
Wreck at Flat Rock
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Wave Height 0.7 mSwell Period 7.6 sWind Speed 3.9 knPrecipitation 0.0 mmTidal Phase ebb
Last evaluated
DANGER: Explicit Risks Present
Wreck at Flat Rock has hazards marked as danger. Entering the water here means you may face serious risks to your personal safety.
- Strong ocean currents danger
Tidal flows around the rock pinnacle can be very strong, capable of sweeping snorkelers offshore. The site is subject to powerful tidal movement through Moreton Bay.
The spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
Logged by the community, confirmed by mods
High risk: Strong ocean currents
Tidal flows around the rock pinnacle can be very strong, capable of sweeping snorkelers offshore. The site is subject to powerful tidal movement through Moreton Bay.
Moderate risk: Boat traffic
Accessible only by boat, this popular dive and fishing spot has vessels anchoring and maneuvering nearby.
Moderate risk: Exposed conditions
Fully exposed to wind and swell with no shelter. Deteriorating weather can make the site dangerous quickly.
Low risk: Marine life encounters
Shark Alley is known for grey nurse sharks, wobbegongs, and bull rays. While generally not aggressive, their presence can be startling.
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Getting in
Boat
Entry
Flat Rock is located several kilometres north of North Stradbroke Island (Minjerribah) in Moreton Bay. Accessible only by private or charter boat from departure points on the Gold Coast, Brisbane (e.g. Cleveland), or around Moreton Bay. No shore access.
Parking & facilities
Park at boat ramps on North Stradbroke Island or at mainland marinas in Cleveland or the Gold Coast. No parking at the site itself.
No direct fee, but charter boat costs apply. Check with local dive operators.
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About this data
- Conditions last evaluated
- Spot data last updated
- Data sources
- Open-Meteo (marine & weather conditions), tide predictions via UTide, community contributors (descriptions, hazards, marine life).
- License
- Spot content licensed under CC BY-SA 4.0. How's the Spot is open source.
Weather & swell ┬╖ Open-Meteo marine & weather APIs Tides ┬╖ UTide harmonic analysis Sea & safety ┬╖ community reports