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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. Hotel pickup and drop-off from Port Douglas is included. 


  • Full-day cruise to Agincourt Reef on the outer edge of the Great Barrier Reef from Port Douglas
  • Swim and snorkel from a submerged platform with instructors on hand to help
  • Underwater observatory for coral and fish viewing
  • Fish feeding conducted from snorkeling platform
  • Tropical buffet lunch
  • Reef presentations by a qualified marine biologist
  • Optional guided snorkeling tours, scuba diving and Ocean Walker helmet diving
  • Cruise on a large, twin-hulled, wave-piercing catamaran for a smooth ride accommodating up to 400 passengers
  • Hotel pickup and drop off at Port Douglas hotels

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What You Can Expect

Outer Great Barrier Reef Snorkel Cruise from Port Douglas

Stay dry as you see the reef from the semi-submersible

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 pickup from your Port Douglas hotel and 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. Families with children can take advantage of the Squid Squad Kids Club’s so parents can enjoy some adult exploration time.
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, where your tour concludes with hotel drop-off. 
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. 

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Customer Reviews

Julie R

5 star rating: Highly Recommended July 2016

This tour was amazing! Large catamaran made the trip out to the reef easy and comfortable. Lunch on board was excellent. Semisubmersible trip was great-lots to see. All staff were very helpful. I and #39;m not a confident swimmer but was able to snorkel with ease. My whole family loved it!!

Robert W

5 star rating: Highly Recommended December 2015

Wonderful experience.


5 star rating: Highly Recommended November 2015

This trip was exceptional and weather was good,because this does help, all activities out at the reef were excellent.What a day!!!!!!


5 star rating: Highly Recommended March 2015

Staff really tried to make sure everyone had a good experience

Craig F

5 star rating: Highly Recommended November 2014

Great tour. We were lucky as the boat was half full so it was not grounded. Great boat and crew. Really nice in rough seas as it takes the waves well.

Edward A

5 star rating: Highly Recommended March 2014

A great experience,facilities were very good on the pontoon. Tried to snorkel but swallowed half the ocean

jennifer k

5 star rating: Highly Recommended June 2013

A great day would recommend it to anyone

Terry B United Kingdom

5 star rating: Highly Recommended March 2013

the organisation and helpfulness of the staff was 1st class .The day itself was even better .its a must for anyone who is thinking about it .Put it on your wishlist

Alexander T USA

5 star rating: Highly Recommended February 2013

Well organized. NOte this departs ex Port Douglas so if you leave from Cairns you'll spend about 2-3 hours on the bus. Spend 3 hours cruising and 3 hours at the reef. Excellent service, semisubmersibles, underwater observation deck and snorkeling are all included and much fun. Options include helicopter ride, guided snorkeling, helmet diving and Scuba diving. One of the pricier tours available but worth every buck even the locals recommend this!.


5 star rating: Highly Recommended February 2013

Very professional crew. Tons to do. Perfect for someone with limited time wanting to do the most possible in a single day. These guys are great!

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