Dungeons & Dragons is a world-class snorkeling and dive site perched on the remote outer edge of Bougainville Reef in the Coral Sea, roughly 220 km northeast of Cairns. This site is famed for its colossal hard coral formations — massive bommies and table corals the size of small cars — that rise from a shallow terrace at 20–30 metres before plunging into a seemingly bottomless abyss. The sheer reef wall is draped in sea fans and soft corals, while the waters above teem with pelagic life. Named for the dramatic, otherworldly coral architecture that resembles a fantasy landscape, it offers some of the most pristine, clear-water snorkeling on the Great Barrier Reef, accessible only by liveaboard expedition.
Dungeons & Dragons (Bougainville Reef)
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Wave Height 0.5 mSwell Period 5.8 sWind Speed 7.7 knPrecipitation 1.7 mmTidal Phase flood
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DANGER: Explicit Risks Present
Dungeons & Dragons (Bougainville Reef) has hazards marked as danger. Entering the water here means you may face serious risks to your personal safety.
- Strong ocean currents danger
Bougainville Reef is in the remote Coral Sea with strong ocean currents, especially around the wall drop-off. Can sweep snorkelers away from the reef.
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Community contribution: submitted by Daniel
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High risk: Strong ocean currents
Bougainville Reef is in the remote Coral Sea with strong ocean currents, especially around the wall drop-off. Can sweep snorkelers away from the reef.
Moderate risk: Deep water drop-off
The reef wall drops to hundreds of metres deep. Snorkelers must stay aware of their position relative to the reef edge.
Moderate risk: Open ocean swell exposure
The Coral Sea is exposed to open ocean swells, which can create challenging surface conditions for snorkelers.
Low risk: Shark presence
Grey reef sharks, white-tip reef sharks, and silver tip sharks are commonly seen patrolling the reef. Generally non-aggressive but present.
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Getting in
Snorkel tour
Entry
Accessible only via multi-day liveaboard from Cairns, approximately 220 km northeast of the city. Mike Ball Dive Expeditions and other Coral Sea liveaboard operators run 7-night expeditions that include Bougainville Reef as a key destination.
Parking & facilities
No parking at the reef. Park at the Cairns marina or hotel and transfer to the liveaboard vessel.
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Liveaboard packages from Cairns range from approximately AUD $3,000–$5,000+ per person for a 7-night expedition. Includes meals, accommodation, and guided dives/snorkels.
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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