Cracker Jack is a signature dive and snorkel site along the northern Ribbon Reefs of the Great Barrier Reef, reachable only by liveaboard expedition from Cairns. This outer reef gem features steep coral-covered walls that drop to a sandy bottom at around 40 metres, with bommies and ledges cloaked in vivid hard and soft corals. Its remote location means fewer visitors and exceptional water clarity, offering snorkellers the chance to drift over pristine coral gardens among schools of tropical fish, barracuda, giant trevally, and the occasional turtle or reef shark. The site is a highlight of multi-day reef trips and is celebrated for its rich marine biodiversity and dramatic underwater topography.
Cracker Jack
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Wave Height 0.4 mSwell Period 6.3 sWind Speed 8.5 knPrecipitation 3.0 mmTidal Phase flood
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Community contribution: submitted by Daniel
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Moderate risk: Strong Currents & Exposed Conditions
The site is on the outer Ribbon Reefs, several hours from Cairns, with potential for strong currents and wind chop, especially in winter and during southeasterly trade winds.
Low risk: Marine Stingers
Marine stingers (box jellyfish and Irukandji) are present in tropical Queensland waters during the warmer months (Nov–May).
Low risk: Sudden Deep Drop-offs
The reef features steep drop-offs and bommies; snorkellers should stay aware of depth changes and avoid straying beyond their comfort zone.
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Getting in
Boat
Entry
Cracker Jack is located on the outer Ribbon Reefs of the Great Barrier Reef, accessible only by liveaboard dive vessels or extended expedition charters departing from Cairns. Trips typically run 3–7 days and visit multiple Ribbon Reef sites.
Parking & facilities
No parking at the site. Park at your departure marina in Cairns (e.g., Cairns Marina or Marlin Marina) where paid long-term parking is available near the reef fleet terminals. Check with your tour operator for specific parking arrangements.
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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