
Experience the Great Barrier Reef with Poseidon Outer Reef Cruises - personalised dive and snorkel adventures ideally suited for experienced divers and confident snorkellers. Departing from Port Douglas, this tour takes you to three unique reef environments in one day, from an exclusive selection of sites at the renowned Agincourt ribbon reefs and Escape Reef.
With small groups and a focus on marine interpretation, enjoy a tailored experience with knowledgeable marine biologists, gaining a fascinating insight into the reef's diverse ecology. Whether snorkelling or diving, you'll explore vibrant coral formations and marine life, with opportunities for introductory dives or up to three certified dives. During the season, you may even have the chance to swim with Dwarf Minke Whales, creating unforgettable moments on your journey through the reef.

Explore three exclusive World Heritage Great Barrier Reef Dive and snorkel locations with expert marine biologist site briefings at each site. You can also contribute to reef conservation by participating in a Marine Park monitoring survey.

From drift diving to guided snorkel tours with marine interpretation, Poseidon offers a range of experiences across our exclusive reef sites, all under the supervision of experienced Dive Instructors.

Poseidon is a 24 metre catamaran purpose-built for dive and snorkel adventures. With new generation sustainable engines and all the onboard comforts, enjoy top-of-the-line dive and snorkel gear that exceeds industry standards and hot freshwater showers after a salty day.
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 adventure snorkelling or choose to scuba dive (additional cost) in this marine wilderness. Certified divers can enjoy up to 3 dives. With freshwater showers, a licensed bar, air-conditioned saloon and open deck area, 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.
Return coach transfers from Port Douglas accommodation
Return cruise from Port Douglas
Morning tea & coffee with fresh muffins & focaccia on boarding
Afternoon tea with cake and tropical fruit platter
Tropical buffet lunch with prawns
Reef Biosearch marine biologist site brief and interpretation at each reef site
Premium snorkelling equipment (mask, snorkel & fins) and instruction provided
Premium dive equipment including wetsuits
Lycra suits and flotation devices
Prescription masks available at no extra cost
Hot freshwater showers
Citizen science! Opportunity to participate in a monitoring survey
Introductory & Certified Scuba Diving
Wetsuits for snorkellers available for hire on board (Included for divers)
Professional photographer service on board
Your camera
Swimming costume and beach towel
Hat, sunscreen (marine friendly) and shirt for sun protection
Cash for drinks at the bar, credit card for shopping and additional dives
Underwater digital cameras available for hire
Certification card for certified divers
Check in at Quicksilver's office at the marina for boarding passes.
Vessel boarding at the Port Douglas Marine, Port Douglas.
Depart for Outer Barrier Reef.
Arrive at the 1st Agincourt Reef site.
Transit to the 2nd Agincourt Reef site.
Arrive at the 2nd Agincourt Reef site.
Buffet lunch served.
Transit to the 3rd Agincourt Reef site.
Arrive at the 3rd Agincourt Reef site. Afternoon tea served.
All passengers board for final passenger count.
Commence return journey.
Arrive at Port Douglas Marina.
Times may vary subject to sites visited: On rare occasions, services can be subject to the effect of weather of unforeseen circumstances requiring changes to the scheduled itinerary.

