Certified Diving
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.
- Experience up to 3 dives at 3 different and diverse reef locations.
- Large tanks and computers for extended bottom time.
Premium dive and snorkel equipment including:
- High-end silicone & wide field-of-vision masks
- Fins designed for incredible manoeuvrability
- Dive computers with multiple dive modes
Certified divers can enjoy up to 3 dives on a day dive excursion with Poseidon. This included 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 our wide variety of quality sites at over 30 different reef locations, we choose the best three sites of the day according to weather and tidal conditions. We use a dedicated dive tender for drift dives. All dives are guided at no extra charge and your Dive Instructor will brief you on the sites, equipment and safety procedures.
If you have more time and would like to experience even more of the Great Barrier Reef's amazing diversity, we recommend Pro Dive Cairns' 3 Day / 2 Night Liveaboard Dive Trips.

Looking to become a Certified Scuba Diver?
Quicksilver Dive's 4 day PADI learn to dive course combines two day's training at the state of the art Diver Training centre in Port Douglas with two exciting day trips to Agincourt Reef.
If you're short on time, the 3 Day eLearning course is the ideal option as you complete the theory component online before joining the course for a day of pool sessions and two day trips to complete your training dives.
Introductory Diving
No experience is required to enjoy the thrill of scuba diving under the safe control and supervision of our highly qualified instructors. Small groups ensure personal service and individual attention.
As an introductory or first time diver, there's the choice to do an introductory dive at each of the 3 reef sites we visit on the day so you can experience 3 completely different reef environments. Or choose to spend part of your day diving and the rest snorkelling. There's plenty of time to enjoy both activities!
After completing the necessary paper work which includes a medical questionnaire, you'll do a briefing and tuition with your instructor onboard. Then it's time to gear up and test your new skills on the vessel's dive platform before heading off on your underwater adventure with your instructor.
Private Guided Diving
Imagine exploring the most pristine Great Barrier Reef dive sites on the Agincourt Ribbon Reefs, with your very own private scuba guide for the day. While all scuba dives on Poseidon are guided, a private guided dive tour takes the experience to the next level, offering a fully personalised and carefully curated adventure.
Whether you’re an experienced diver looking for a more unique experience beyond a standard tour, newly qualified, or even a first-time diver wanting extra confidence and individual attention, a private guided scuba tour is the ultimate way to explore the Great Barrier Reef and unlock its hidden secrets.
Discover Private DivingLearn to Dive Courses
Pro Dive Cairns & Quicksilver Dive Learn to Dive Courses
Scuba Diving Conditions
- Certain medical conditions (diabetes, asthma etc.) and medications may preclude some people from scuba diving. Please see our Dive Safety Page for more information.
- Minimum age for diving is 12 years.
- Flying after diving: A wait of 12 hours is recommended but preferably 24 hours, if doing multiple dives, before ascending to an altitude of 300 metres or greater.
- Certified divers must possess an internationally recognised SCUBA certificate card.