Product Name:

Poseidon Snorkel and Dive

Poseidon Dive Boat with Divers

Dive 3 Reef Sites on the Agincourt Ribbon Reefs. Large Dive Deck! Really Good Diving!

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All Prices in Australian Dollars.

Camera Special

Cairns Underwater Camera Hire Service


Book this trip with us, you must spend over $550.00 AUD to receive our 1 x Free Cairns Underwater Camera Hire. You must come into our Cairns Esplanade Shop to pick up the camera the day before departure day before 5:30 pm. You also need to supply your own SD Card. Reserve your camera today!

*Not valid for any tours visiting the islands. Fine white sand damages the seals on the cameras and makes them leak!

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Can't decide? We have personally been on every Cairns reef and diving trip. We can help you choose the best tour, to suit your experience and budget.

Product Name:

Poseidon Snorkel and Dive

Tour Type: Full Day | Operates: Daily | Departs: 8:30am | Returns: 4:30pm | Transfers: Yes, Extra Cost


Dive 3 Reef Sites on the Agincourt Ribbon Reefs. Large Dive Deck! Really Good Diving!

Scuba Diving: Yes, Optional Extra See Price List All Snorkel Gear: Yes, Snorkel, Fins, Mask and Life Jackets
Meals: Hot and Cold Lunch Glass Bottom Boat: No
Helicopter Flights: No Semi-Submarines: No
Helmet Diving: No Outer Reef: Yes, 3 Sites on the Agincourt Reefs!

Poseidon offers daily Port Douglas snorkel and dive tours, visiting the Great Barrier Reef’s Agincourt Ribbon Reefs. The comfortable 24m catamaran visits three (3) different reef sites throughout the day, providing guests with just over four (4) hours to explore the reef. The Agincourt Ribbon Reefs are located in open water on the edge of the Continental Shelf, as such, this tour is recommended for confident swimmers (snorkellers) and certified divers. Please note: all dives on this boat are guided and divers will appreciate the large tanks, providing maximum bottom time for air-hungry divers.

Poseidon is operated by the Quicksilver Group. Travel time to the reef is approximately 90-minutes. All briefings are provided on the way to the reef. The two-level catamaran has air-conditioned interior seating and lots of outdoor space, offering covered seating to enjoy the views or sundeck seating. It’s a non-smoking boat and for your comfort, there are two toilets and a freshwater shower on board. Snorkelers have comfortable water-entry from the submerged steps at the back of the boat. Certified divers will either have a tender drop-off (pending site and availability) or giant stride entry off the side of the boat.

Included in the Poseidon day tour is: morning and afternoon tea, cold buffet lunch (including prawns), a guided marine biologist snorkel tour and reef interpretation presentation, snorkelling equipment (mask, snorkel, fins and flotation devices if required), lycra suits and courtesy transfers within the Port Douglas area. Transfers are available from Cairns: these are charged in addition to the tour price.


All prices in Australian Dollars.
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Adult (Snorkel)Snorkel-$255.00$7.00$262.00
Child (Snorkel)Snorkel-$181.00$7.00$188.00
Adult (1-Certified Dives)Certified Diving1$312.00$7.00$319.00
Adult (2-Certified Dives)Certified Diving2$338.00$7.00$345.00
Adult (3-Certified Dives)Certified Diving3$358.00$7.00$365.00
Adult (1-Introductory Dive)Introductory Diving1$329.00$7.00$336.00
Adult (2-Introductory Dive)Introductory Diving2$398.00$7.00$405.00


Check-in for Poseidon is at the boat, moored in Port Douglas’ Marina Mirage, from 8.10am. Departure is scheduled for 8.30am and complimentary tea, coffee, muffins and fruit are served on boarding. Welcome, trip, equipment, activity and safety briefings are all provided during the 90-minute transfer out to your first reef destination at the Agincourt Ribbon Reefs.

Poseidon visits three (3) different reef sites during your day tour, giving you just over one (1) hour at each site. The informative reef presentation is provided around mid-morning, while the boat moves to its second site for the day and the cold buffet lunch is served from 12.15pm – 1pm. After lunch the boat moves to its third and final reef site for the day. Thorough headcounts are conducted by the crew before each move. Poseidon packs-up around 2.45pm, getting back into Port Douglas between 4.15-4.30pm.



Poseidon offers certified diving only (NO introductory diving). Divers can choose to do 1, 2 or 3 dives, with one dive being offered at each of the reef sites throughout the day. All diving is guided by the professional dive crew and diving equipment is included in the dive tour price. Packages are available for those with and without their own equipment. Poseidon’s dive tanks are large, offering maximum bottom time. Please note: all divers will be required to complete a medical questionnaire on board, prior to diving.

CERTIFIED DIVING: Certified divers will appreciate the spacious dive deck and large tanks on-board Poseidon. All certified diving is guided and there is one (1) dive offered at each of the three (3) reef sites. Please note: Private dive guides can be arranged / booked at extra cost. The Agincourt Ribbon Reefs offer excellent diving conditions and the best sites will be chosen on the day to maximise your experience. You may do tender drop-offs or giant stride water entry. Dive sites offer wall dives, swim throughs, caves, bommies and more. You will be required to show your Divers License and complete Dive Medical paperwork on board, prior to diving. Equipment and dive site briefings are all provided on board the boat.


Poseidon includes a guided marine biologist snorkel tour in their tour price. This is an excellent opportunity to learn more about the Great Barrier Reef and the creatures you are seeing, while you are in the water. There is also a dedicated snorkel crew, who will provide equipment and reef site briefings and assist you throughout the day with any difficulties you may experience. Floatation devices are also provided if required.

The Agincourt Ribbon Reefs are located on the edge of the Continental Shelf, so although the waters are somewhat protected by the reefs themselves, this is a trip recommended for confident swimmers as there may be some current, pending conditions. All snorkelling equipment (mask, snorkel, fins) is included in the tour price, as is a lycra suit (excellent for sun protection). The Ribbon Reefs rise from the ocean floor to plateau just metres beneath the surface (pending tide and time of day), offering excellent conditions for snorkelers to safely get close to the corals and fish.

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Full Reviews:

Cairns Dive Adventures Trip Reviews

Poseidon Port Douglas Dive Review

Poseidon offers a tidy day tour operation from Port Douglas to the Agincourt Ribbon Reefs, on the Great Barrier Reef. The three (3) reef sites offer a variety of things to see and do and this trip would suit confident swimmers / snorkelers and certified divers, who will certainly appreciate the spacious dive deck and...

All prices in Australian Dollars.
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Tour Notes:

Please Note: To try any form of Scuba Diving you must be medically fit with no asthma and not be taking any prescription medication. Also, PADI recommends you must allow 24 hours after diving before flying in an airplane.

Inclusions: Cold buffet lunch, morning & afternoon tea, coffee & snacks, snorkeling equipment incl mask, snorkel and fins, 1 x marine biologist guided snorkel tour, lycra suits & floatation devices, reef interpretation presentation and transfers from within Port Douglas.

Extras (Pay Later): An additional $6.50 per person is payable on board on the day of travel. This is comprised of $3.50 environmental management charge and $3.00 administration.

Additional Extras: Coach transfers from Cairns are $32.00 per Adult and $28.00 per Child.



Cairns Underwater Camera Hire Service

Spend over $550.00 AUD on your Great Barrier Reef tour with us and receive the latest Digital Underwater Camera Hire. Take amazing High-Resolution images and 1080 HD Video.

Not available for any tours to the Islands as fine white sand damages the seals on the cameras and makes them leak!

You need to come into our shop located on the Cairns Esplanade the day before departure to pick up the camera before 5:30 pm. You also need to supply your own SD Camera Card and drop the camera off back at our shop before 6:00pm.