Available languages
7 hours 30 minutes
Mobile ticket
A maximum of 36 people.
Guided Snorkel Tours.
Glass Bottom Boat.
Optical Masks Included.
Free Facebook Photos (Posted daily).
Suitable for all physical fitness levels
Introductory Divers note, Some medical conditions, medications and recent operations can and may prevent you from Scuba Diving. You may require a Dive Medical to Australian Medical Standard AS4005-1.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Seastar Cruises Reef Day Trips
Check in at 7.30 am at Cairns Marlin Marina, E finger directly on board Seastar.
Michaelmas Cay
Located 22 nautical miles (40 km) from Cairns, the same as the distance across the English Channel, and close to the outer reef systems, Michaelmas Cay is the largest of the uninhabited coral cays in the Cairns region; in fact it is huge in comparison. Seastar is the first vessel to arrive at Michaelmas Cay. Very few tour vessels are now permitted access to this sensitive island and now there are only two which travel daily that are permitted the right to use and access the Cay.
Buoyancy vest and noodle
Luxury Outer Great Barrier Reef Cruise
Buffet lunch
Island access to world famous Michaelmas Cay
Guided snorkel Tour at Michaelmas Cay and Hastings Reef
Morning & afternoon tea
Wet-suit or stinger-suit (seasonal)
Mask, Snorkel and Fins
Return Bus transfer - Cairns City Area or Northern Beaches and Outer Cairns City Area
Cold drinks and snacks
Introductory Diving and Certified Diving available as optional Extra
Outer Great Barrier Reef Snorkel Tour includes luxury catamaran cruise all equipment and two guided snorkel tours
997 reviews
Total reviews and rating from Viator & Tripadvisor
david k,,Dec 6, 2025
- Review from Viator
First time on the reef. Fantastic experience with fantastic people. I was snorkeling but my wife came along for the ride (she has always said she was afraid of the water). Well, on the second reef, the staff convinced her she would be in good hands to get into the water and at least float and see what was on the reef. Believe it or not, they helped her get over her fear and she was so happy she sent pictures to all of her friends. They could not believe seeing her with her dive suit, mask and snorkel floating in the water with one of the staff people. It was great to watch. Now she wants to try it again (this time closer to our home in Miami Florida). Anyway, they are the greatest people and the lunch provided was great with many options and we had a few brews on the way back in. Overall, a day we will never forget.
Ann O,,Dec 2, 2025
- Review from Viator
The tour took us to two different areas of the reef. The guides are excellent, focused on safety and experiences of the customers. Very good casual lunch with vegan options. The snorkeling was great - many species of fish. You can snorkle by yourself or follow a guide around the area.
Richard B,,Dec 2, 2025
- Review from Viator
If you are going to do it, this is the way to do it! Brilliant crew brilliant boat and the best of times. This is the way to make memories!
Cruiser06157290009,,Nov 28, 2025
- Review from Tripadvisor
Diving on the Great Barrier Reef as to be expected was fantastic. Great friendly staff and really good food at lunchtime. The day with SeaStar was snorkelling, glass bottomed boat and diving for those who were qualified.
Lana G,,Nov 26, 2025
- Review from Viator
Don't think twice and just book this tour. We had a experience on the Seastar. We boarded promptly at 7:30 am, snorkeled st two sites and arrived back at the marina by 3:30. We saw so many sea creatures and the crew was knowledgable and friendly.
meischi68,,Nov 26, 2025
- Review from Tripadvisor
We had a very nice time. The snorkeling at the two spots was great and we really enjoyed the underwater world. The trip on the glass bottom boat was also informative and fun. Drinks and food were very delicious. We can only recommend this tour. We had a wonderful day
Elisa S,,Nov 25, 2025
- Review from Viator
Among all the offers there are in Cairns, I am so glad I found this one! Very nice, young and familiar crew that takes care of you at all times. I went with my parents, both retired, and they had a lovely time! I am so grateful especially for having Maria as our snorkel guide-she ensured my mom was doing OK and checking on her during the experience. Also heads up to Pierre, who translated in Spanish for her. Overall, an amazing day! Thank you guys! And thanks for the pictures!
Diane A,,Nov 17, 2025
- Review from Viator
A great family business making it all very personal. Fast boat out to the middle & outer reef - truly stunning! Excellent opportunities for snorkeling on your own or with a guide. Very good lunch on board. Glass bottom boat on Michaelmas Cay which was excellent.
Mary M,,Nov 17, 2025
- Review from Tripadvisor
The best service of any boat trip I've been on. They made sure each of the 35 guests were looked after at all times. We went to great locations, food ok, reasonable equipment but the staff really made it great.
johnrP2202OQ,,Nov 16, 2025
- Review from Tripadvisor
The guides were excellent. They took time to explain everything and were really knowledgeable. They were polite, friendly and professional.
Operated by Seastar Cruises