Designed for personalised dive and snorkel adventures, Poseidon Outer Reef Cruises departs daily from Port Douglas to take you on a journey of discovery. You’ll visit 3 different and spectacular reef sites on the Outer Great Barrier Reef at the Agincourt ribbon reefs.With clear outer reef waters, beautiful corals and incredible marine life diversity, the Agincourt ribbon reefs offer you the opportunity to snorkel or dive in some of the most spectacular and special places on the entire Great Barrier Reef. Poseidon caters to snorkellers, introductory and certified divers. Enjoy unlimited snorkelling in this marine wilderness in three different reef environments while certified and introductory divers can enjoy up to 3 dives.Poseidon has limited passenger numbers to ensure personalised service and attention. Our guests are looked after by 12 highly qualified crew members to ensure there is plenty of help on hand to assist both experienced and beginner divers and snorkellers. 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.