Outer Barrier Reef 3-Site Snorkel and Dive Cruise Port Douglas

Port Douglas and the marina

The day begins with pickup from your Port Douglas accommodation, or you can drive yourself to the superyacht marina on Wharf Street. On board, the crew outlines the day and gives a safety briefing before the vessel leaves Dickson Inlet and heads out past Four Mile Beach towards the outer reef.

The crossing takes about 1.5 hours on a vessel with plenty of indoor and outdoor seating, air-conditioning and fresh-water showers. Divers are briefed on the way, so no time is lost once the boat moors, and snorkellers can collect and fit their gear before arrival. It is a comfortable, unhurried start, and many guests enjoy watching the mountains of the coastal range fade behind them.

Agincourt Reef

Agincourt Reef is one of the ribbon reefs on the edge of the continental shelf, about 1.5 hours by boat from Port Douglas. Its position far from the mainland means clear water and healthy, varied coral. Shallow coral gardens rise to within a couple of metres of the surface, so snorkellers see much of the colour and marine life without diving at all.

Here you may find plate and staghorn corals, giant clams with vivid mantles, and schools of fusiliers flashing in the blue. The skipper chooses moorings that offer shelter on the day, which is one reason a multi-site trip often gives a more varied Agincourt Reef snorkel than a single fixed location.

Opal Reef

Opal Reef is another of the outer ribbon reefs north-east of Port Douglas, known for its coral bommies, swim-throughs and walls that suit both snorkellers and divers. On days when conditions favour it, the crew may choose one or more Opal Reef sites in place of Agincourt, so every trip is slightly different.

Because the vessel visits three locations, you can experience different reef shapes during the day: shallow coral gardens, sandy patches where rays rest, and the edges of deeper channels. Morning tea is served before the move to the second site, giving you time to warm up, rest in the shade and swap stories with fellow snorkellers before the next swim.

Marine life on the outer reef

At the second site a buffet lunch is served, and you can join the interpretive reef talk, the guided snorkel tour or both. Float over coral gardens alive with playful clownfish in their anemones, graceful green turtles, stingrays, Maori wrasse, coral cod and parrotfish crunching on coral. Hundreds of species live on the outer reef, and the crew helps you recognise them.

The third and final site is your time to snorkel, dive, relax on deck or simply take in the view. Afternoon tea is served before the return journey, and you arrive back in Port Douglas in the late afternoon, with transfer to your accommodation if your option includes it.

Diving options and the best time to go

Certified divers can choose an option with one guided scuba dive at the first site, then snorkel at the other two. Newcomers can try an introductory dive with an instructor, with no licence needed, before continuing to snorkel. Both dive options include all equipment and the same reef talk, snorkel tour and meals.

The best time to snorkel the Great Barrier Reef from Port Douglas is June to October, when seas are calmer and visibility is at its best. From November to May the water is warmer, and the lycra suits and wetsuits on board protect against stingers and keep you comfortable. If you are prone to seasickness, ask a pharmacist for advice before the day.