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Certified Diving

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Certified divers can enjoy up to 3 dives on a day dive excursion with Poseidon. This includes drift and wall dives, isolated pinnacles and coral gardens with their endless variety of colourful marinelife.

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Snorkelling

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Explore the magnificent coral gardens of the Agincourt ribbon reefs by snorkel. Discover the vibrant fish and coral life of three specifically chosen sites. Perfect for beginners and experienced reef snorkellers.

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The Great Barrier Reef


The Great Barrier Reef is one of the world’s most amazing and unique natural spectacles. Visible from outer space, this 348,000 km2 Natural Wonder of the World is a must for everyone to experience.

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Snorkel, Dive & Cruise the Great Barrier Reef

Designed for personalised dive and snorkel adventures, Poseidon Outer Reef Cruises departs daily from Port Douglas to visit 3 different and unique reef environments. Poseidon is the only dive boat in our region dedicated to certified diving. Our range of over 30 spectacular and exclusive reef sites at the Agincourt ribbon reefs and Escape Reef, enables us to offer some of the very best day boat diving.

With clear outer reef waters, beautiful corals and incredible marine life diversity, the Agincourt ribbon reefs offer the opportunity to snorkel and dive in some of the most pristine and special places on the entire Great Barrier Reef. Enjoy unlimited snorkelling in this marine wilderness at three different reef sites, which are selected daily, and up to 3 certified dives.

Poseidon has limited passenger numbers to ensure personalised service and attention. Whether you choose to snorkel or dive, with an amazing array of quality reef sites, attentive and friendly crew, the comforts aboard and our special permit to swim with the Dwarf Minke Whales, Poseidon offers you the perfect setting to enjoy a day on the Great Barrier Reef.

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