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Full Day Trip

Departs: Daily


Full day snorkel trip: $232
Full day snorkel trip plus 1 cert dive: $278
Full day snorkel trip plus 2 cert dives: $298
Full day snorkel trip plus 3 cert dives: $314

Reef Levy payable on arrival: $6.50

Departing daily from Port Douglas, Poseidon is a 24 metre catamaran designed for personalised dive and snorkel adventures as you visit 3 different reef sites on the outer Great Barrier Reef at the stunning Agincourt ribbon reefs.

Enjoy snorkelling in this marine wilderness, including a guided snorkel tour, or choose to scuba dive (additional cost). Certified divers can enjoy up to 3 dives. With freshwater showers, a licensed bar, air-conditioned saloon and open deck areas, Poseidon makes a perfect setting to enjoy a day on the reef. Poseidon also has a special permit allowing guests to swim with the dwarf minke whales.

The clear outer reef waters, beautiful corals and incredible marine life found at the Agincourt ribbon reefs, 70km north east of Port Douglas and on the very outer edge of the Great Barrier Reef, enable us to offer some of the very best possible day boat diving for both the seasoned and novice diver.



Certified divers can enjoy up to 3 dives on a day dive excursion with Poseidon. This includes drift and wall dives, isolated pinnacles surrounded by pelagic fish and coral gardens with their endless variety of colourful wrasses, cods, parrot fish, clown fish, angel fish, clams and anemones, that make a healthy living reef so beautiful and exciting to dive. With their wide variety of quality sites at over 30 different reef locations, they can choose the best three sites of the day according to weather and tidal conditions. Poseidon use of a dedicated dive tender for drift dives and all dives are guided at no extra charge and your Dive Master will brief you on the sites, equipment and safety procedures.


A cruise with Poseidon is all about having the opportunity to explore the magnificent coral gardens of the Agincourt ribbon reefs. Discover the vibrant fish life and delicate coral of three specifically chosen sites suited for conditions on the day of travel. The shallow reef lagoons are a great opportunity to see the Great Barrier Reef at its best, as some of the best coral growth is found in the shallower waters where sunlight is plentiful. For more experienced snorkellers, you’ll be thrilled with exploring spectacular drop-offs and coral pinnacles.

If you haven’t snorkelled before their crew will be on hand to give you instruction but they do recommend that you are able to swim and of a fairly good fitness level as snorkelling can be a strenuous activity.

The Reef Interpretation Talk and guided snorkel tour will give you an amazing insight about the reef and its inhabitants to help you truly appreciate what you are seeing.


  • Experience up to 3 dives at 3 different and diverse reef locations
  • Large tanks and computers for extended bottom time
  • Return coach transfers from Port Douglas accommodation
  • Return Poseidon cruise from Port Douglas
  • Tropical buffet lunch with prawns
  • Morning tea, coffee with fresh muffins and focaccia on boarding
  • Afternoon tea with cake and tropical fruit platter
  • Reef interpretation talk
  • Guided snorkel tour with marine biologist
  • Snorkelling equipment (mask, snorkel & fins) and instruction provided
  • Lycra suits and flotation devices
  • Prescription masks available at no extra cost
  • Freshwater showers

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