Discover the amazing coral formations and marine life of the outer Great Barrier Reef on this snorkeling adventure cruise from Port Douglas. Travel aboard a luxury catamaran to Agincourt Reef and design your perfect day at sea with a wide range of family-friendly activities including snorkeling, fish feeding, a semi-submersible boat tour and a unique Ocean Walker helmet dive. Go deeper with an introductory or certified scuba dive, and savor a delicious buffet lunch midday.

Underwater observatory for coral and fish viewing
Fish feeding conducted from snorkeling platform
Tropical buffet lunch
Reef presentations by a qualified marine biologist

What's Included

Use of snorkeling equipment
Lunch
Morning and afternoon tea
Use of lycra suit and buoyancy vests
Semi-submarine reef discovery tour with commentary
Underwater observatory
Informative talk by marine biologist
Environmental Management Charge

Drinks (available to purchase)
Hotel pickup and drop-off

Meeting And Pickup

Meeting point

Crystalbrook Superyacht Marina
44 Wharf St, Port Douglas QLD 4877, Australia
Crystalbrook Marina, Wharf Street, Port Douglas. Check in is required by 9am

Start time

10:00 am

End point

This activity ends back at the meeting point.

What To Expect

Agincourt Reef is a fantastic base for discovering the outer Great Barrier Reef, featuring a permanently moored pontoon for easy underwater exploration. Your full-day adventure begins with a 1.5-hour high-speed catamaran cruise to the edges of the reef. During the voyage, relax on the sun decks, take morning tea and watch a snorkeling demonstration.

When you arrive at Agincourt, splash into the water from a submerged platform to snorkel among tropical fish and coral gardens using provided snorkeling equipment. If you prefer to stay dry, you can still explore the world-famous reef from an underwater observatory or with an included semi-submersible boat tour.

Many optional activities allow you to customize your reef adventure (additional expense). Go deeper with an introductory or certified scuba dive, take a guided snorkeling tour led by a marine biologist, embark on an Ocean Walker helmet dive or get an aerial perspective on the reef with a thrilling 10-minute helicopter flight.

Savor a tropical buffet lunch onboard the catamaran midday, and recharge with afternoon tea. After approximately 3.5 hours at the reef, relax on the return ride to Port Douglas.

See Itinerary below for a complete description of all included and optional tours and activities. Select the guided snorkeling tour, introductory dive and Ocean Walker at booking; other activities are payable direct on the day of your tour.

Quicksilver Cruises

Departing from Port Douglas, your 90-minute high speed catamaran takes you directly to Agincourt Reef. The permanent pontoon moored here provides a sheltered base. During the trip a snorkeling demonstration will get you ready for your adventure, and the staff will take you through your options for the day.

1 hour 30 minutes • Admission Ticket Free

Agincourt Reef

You'll have around 3.5 hours to enjoy the reef at your leisure. Grab a snorkel and fins and hit the water on your own, or join an optional guided snorkeling tour with a qualified marine biologist. Snorkeling is a great way to explore the Great Barrier Reef, and there are friendly staff on hand to show you how. Prefer to stay dry? You can explore the stunning reef from the comfort of a semi-submersible submarine. You'll take a leisurely cruise through colorful coral gardens, giving you a snorkeler's view of the marine life without getting wet. For a little more adventure, why not try an introductory scuba dive. or a unique Ocean Walker Helmet Dive - no diving experience necessary. We recommend you book this reef trip on your first full available day. You then have the opportunity to be flexible and change your travel date if you wish. Your booking can be changed at no additional cost directly with the operator once you are in Cairns.

Admission Ticket Free

Additional Info

Confirmation will be received at time of booking
Diving within 48 hours of flying is not recommended. All participants will be required to complete a health questionaire prior to diving. Some pre-existing medical conditions (eg asthma, heart conditions, etc) may prevent you from diving, please consult your doctor
Minimum age for all diving activities is 12 years, the maximum age is 70 years
Not wheelchair accessible

Near public transportation
Most travellers can participate
This tour/activity will have a maximum of 300 travellers

Cancellation Policy

You can cancel up to 24 hours in advance of the experience for a full refund.

For a full refund, you must cancel at least 24 hours before the experience’s start time.
If you cancel less than 24 hours before the experience’s start time, the amount you paid will not be refunded.
Any changes made less than 24 hours before the experience’s start time will not be accepted.

Cut-off times are based on the experience’s local time.
This experience requires good weather. If it’s cancelled due to poor weather, you’ll be offered a different date or a full refund.

Traveller Photos

Reviews

4.5

372 reviews

Total review count and overall rating based on Viator and Tripadvisor reviews

Reviews by Viator travellers.

Showing 1-10 of 372 reviews

Recommended

John_F, Mar 2023

Excellent experience. Not overcrowded as towards end of season. The marine biologist guided tour is extra but was really worth it to see bits we wouldn't have otherwise explored. Good food and plenty of it with no real queue. They provided prescription goggles which was really useful for someone who can't see much without his glasses

Great Experience

Sindhu_K, Mar 2023

Snorkeled for the first time and had a great time. The experience was beautiful and therapeutic. The crew was very friendly and helpful

A must do tour for all!

Teresa_T, Feb 2023

I was not expecting our vessel to be docked at a platform in the middle of the Pacific Ocean. There was so many activities for all to experience the GBR even if you didn’t want to get wet. The Abundant fish & many types of coral I saw was spectacular. The food & snacks we were feed was great, including healthy options. Every single one of the crew members made us feel safe & special. I will never forget this tour! Bravo Quicksilver & crew! TMT

Enchanting underwater realm

John_J, Jan 2023

The quicksilver boat and platform provided a comfortable and convenient staging area to enter the water at the Reef. The variety and colors of the fish and coral were magnificent

Swimming with turtles and...

Donna_W, Jan 2023

Swimming with turtles and seeing the reef life. Prawn lunch was delicious and the trip to the reef was smooth. Staff very friendly.

Not a good option for the price you pay

lide_C, Jan 2023

This tour is certainly geared towards people that have never dived a reef. In short I wouldn't quicksilver tours to anyone other than perhaps a family that has very low expectations and is comfortable with waiting in line to snorkel surrounded by hundreds of other snorkellers.

Beautiful reef

jenny_w, Jan 2023

The best experience ever. We had the best time snorkeling. We are very lucky to have such beautiful coral

Great experience for the whole family!

Xiaoying_Z, Dec 2022

Good experience even for non swimmer. Lots of activities for different level swimmers. We only do snorkeling as we need to look after younger kids. For older kids, they can go introduction scuba diving and excursion snorkeling to further reef. Great experience for all family.

The sea life was...

David_B, Dec 2022

The sea life was wonderful and the staff were all fantastic from the time we left Port Douglas until the time we returned back.

Unmissable

Susan_H, Nov 2022

Wow, what a fantastic day we had on this trip. I was a bit apprehensive being scared of open water but picked this as I could stay on pontoon. However, it was so well organised that I took the plunge and took it slow to get use to the snorkel and so glad I did it. It was absolutely amazing. Crew were fantastic and a fabulous buffet lunch too. Don't be put off by it being a large cruise people wise, as a lot of crew members aboard to make it personal and it never felt like too many people in one space. If I can do it anyone can but there are other options for non swimmers too

Lovely experience

Allie_D, Nov 2022

It was lovely snorkelling with my husband. An experience of joy and wonder, very peaceful under the water with fish and coral

Aboard the 1st cruise...

Robin_E, Nov 2022

Aboard the 1st cruise ship visit to Arlie Beach by the Celebrity Eclipse in Nov 2022 where we came half way across the world to visit the famed Great Barrier Reef, but when all the ship's excursions were booked already, we had $225.50 taken from us by Ocean Rafting and Viator when they knowingly took our reservation for it's 8:45 am tour with the knowledge our ship's tendering disembarkation was at a further location than the 100 meters walk that we were told when we made the query through the Viator pre-booking process. As those who have been on cruise ships, the Internet connectivity is extremely poor or non-existent except for the most basic of text content, so we were not aware that the new arrival location was not served by Ocean Rafting's pick up van until we sailed into range of the shore Internet. We attempted to work with Ocean Rafting to take an available no-show spot on it's 10:15 am tour since we were standing there at 10:00 am but we were told the raft was 100% full, even though we had seen other parties from our cruise ship who had booked for that time were not aboard that nor were they able to show up in time for that raft's full capacity departure. From the talk of others on the way back on the ship's bus as we returned to the ship after having our hopes to visit the GBR using Ocean Rafting, many of us who booked with Viator for the 8:45 and 10:15 am snorkel adventures had their hopes dashed by Ocean Adventure from Arlie Beach. We come from across the world after 3 years since our original Australia trip was terminated by the pandemic to find Ocean Rafting taking our US$225.50 which Viator is allowing to continue it's seemingly predatory business practice. So fair warning to you when you are considering going with this company - prepare for a huge disappointment!!!!

Fantastic Day on the Outer Reef

Linda_F, Nov 2022

The trip on Quicksilver was fabulous! The boat is spacious and comfortable and the platform is also very spacious and comfortable and well organized. All of the staff were friendly and kind. The buffet lunch was good. The snorkeling was great! They explained everything clearly how to use the equipment and how to check it was the right size. Getting the various gear was simple and easy, everything was so well organized. There were bouys around the snorkel practice area and around the outer area containing an incredible portion of the reef. I felt safe at all times with a lifeguard surveying the whole area. Everthing was included in the trip except there was an extra charge for the underwater camera rental which they provided on board. We got to keep the photos and videos on a mega-gig SD card. They warned us not to expect the reef to be as colourful as seen on TV without camera lights. But it was very colourful! - so close under the water and brilliant purples, blues, oranges, whites, yellows, pinks. So many beautiful fish. and I actually saw a large shark swimming under me! The whole day from beginning to end was perfect. Thank you Quicksilver. This was a bucket-list trip for me and you made it perfect.

Trip of a Lifetime

Bernadette_S, Nov 2022

Fabulous scenic trip from the Marina to the GBR The Helicopter ride over the Reef absolutely awesome 👏 Snorkelling fantastic plenty of staff on board to help out.

Great experience. Just...

Jason_R, Nov 2022

Great experience. Just enough time to do it all. Lunch was great and drinks at the bar reasonably priced. Staff very helpful and polite. Do the short helicopter scenic flight out there. Beautiful view. Highly recommend.

Stunning adventure!

Sophie_L, Oct 2022

Great trip! Succeeded my expectations. We went out on a nice and tidy cruise boat, was fed all day, lunch was like a Christmas lunch. The day was perfect, and you had plenty of time to snorkel and relax. Snorkelling was unreal, the only thing I would say is that we wished we could have gone to different spots to snorkel as we were located in one designated spot, but other then that it was amazing! I suggest taking a go pro which we unfortunately did not do.

Must do

Donna_S, Oct 2022

Amazing ,well run and organised , friendly helpful staff, delicious lunch!the reef was beautiful, we even saw a turtle!

Bucket list day

Veronica_M, Oct 2022

Definitely ticked off one of my bucket list things… This was absolutely brilliant for the family and worth the money. The buffet lunch was awesome staff was awesome and we were taken care of in an out of the water. Brilliant

Reef experience

William_G, Oct 2022

Absolutely the best day out on the reef. Crew is very experienced. Food excellent. You must do this trip.

Stunning day!

Ann_H, Sept 2022

Everything was perfect. A beautiful day, the staff were friendly and helpful. The snorkelling and submarine tour gave us an amazing view of the reef. Thank you

...