Moored permanently on the outer edge of the Great Barrier Reef, the Quicksilver Pontoon at Agincourt Reef puts you directly above a spectacular ribbon reef teeming with marine life. This dual-level platform offers sheltered snorkelling in crystal-clear Coral Sea waters, with direct access to vibrant coral gardens, drop-offs, and sandy bommies. The pontoon's location on Agincourt Reef — one of the most pristine ribbon reefs — means you can swim among giant clams, anemonefish, and colourful coral formations within seconds of stepping off the platform. It's a full-day outer reef experience with an underwater observatory and semi-submersible available for non-snorkellers.
The Quicksilver Pontoon (Agincourt Reef)
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Wave Height 0.3 mSwell Period 6.2 sWind Speed 10 knPrecipitation 3.2 mmTidal Phase flood
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Community contribution: submitted by Daniel
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Moderate risk: Stinger season (jellyfish)
Box jellyfish (stingers) are present in North QLD waters, particularly during the warmer months. The pontoon provides stinger suits.
Low risk: Outgoing tide current
Agincourt Reef is on the outer edge of the continental shelf where strong tidal flows can occur between the ribbon reefs, especially on outgoing tides.
Low risk: Extreme sun exposure
The sun intensity in tropical North QLD is extreme; reflection off the water increases exposure risk.
Low risk: Shallow coral formations
Coral can be shallow near the pontoon; swimmers should be aware of their surroundings to avoid contact.
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Getting in
Snorkel tour
Entry
Check-in at the Quicksilver reservations counter inside the Port Douglas Marina from 9:15am. The vessel departs for a 90-minute cruise to the pontoon on Agincourt Reef on the outer edge of the Great Barrier Reef.
Parking & facilities
Free parking available at Port Douglas Marina. Drive north from Cairns along the Captain Cook Highway (approx 1 hr) to Port Douglas marina precinct.
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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