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Outer Great Barrier Reef Snorkeling and Diving Cruise from Port Douglas

  • Travel to the outer reef in comfort aboard a high-speed luxury catamaran
  • Choice of snorkeling or scuba diving at three dive sites 
  • Spectacular sightings along the Great Barrier Reef with an expert guide
Outer Great Barrier Reef Snorkeling and Diving Cruise from Port Douglas
From US$186.80
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  • Overview
  • What to Expect
  • Important Information
  • Reviews
  • Q&A
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Cruise and Snorkeling
Includes snorkeling gear, guided snorkeling tour and lunch
From US$186.78
One Certified Dive
Includes snorkeling gear, guided snorkeling tour, lunch. one certified dive with all dive gear included
From US$226.18
Two Certified Dives
Includes snorkeling gear, guided snorkeling tour, lunch. two certified dives with all dive gear included
From US$242.85
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The outer reefs offer some of the best snorkeling and scuba diving on the Great Barrier Reef. This cruise sets sail for the Agincourt Reef, where you can snorkel amid colorful coral gardens, enjoy optional scuba dives (certified divers only), and tuck into a delicious seafood lunch onboard.
What to Expect

Make your own way to the marina in Port Douglas to meet your guide and board your boat—the luxurious Poseidon III, a high-speed catamaran equipped with an air-conditioned lounge and a lowering transom for easy access to the water. Admire the views from deck as you set sail across the Coral Sea and venture out to explore the more remote outer reefs.

Arrive at the first of three dive sites, located along the outer limits of Agincourt Reef. Depending on the tour option selected, either get suited up for your first scuba diving excursion (certified divers only) or jump in to swim and snorkel amid the vibrant coral gardens.

As you explore the reef, learn more about the UNESCO World Heritage­–listed Great Barrier Reef and its unique ecosystems from your marine biologist guide, and spot an abundance of tropical fish, marine life, and colorful coral formations.

You visit three different sites with various options for snorkeling and scuba diving. In between, relax on deck and take in the scenery as you enjoy a seafood buffet lunch. Morning and afternoon tea are also served onboard.

After a full day at sea, return to the mainland, where your tour ends back at Port Douglas.
Write a ReviewReviews (245)

1 - 5 of 245 reviews

Reviewed 3 days ago
A Great Day

We booked with Poseidon because it is a smaller boat and they travel to three sites. The day was very well organised with the divers on the first level and the snorkelers on the top level. Our party was half divers and half snorkelers. I...More

Thank 389glenne
Reviewed 5 days ago
Fantastic day on the Reef!

I took my 12 year old daughter for her first scuba diving experience on Poseidon and we both had a fantastic time! The crew were wonderful, friendly, super enthusiastic and passionate about the reef and extremely experienced and confident instructors who made our day stress...More

Thank BeeCeeElwood
Reviewed 6 days ago via mobile
Amazing Experience!

we were originally booked on another boat but ended up on Poseidon for some reason. This ended up being a great trip; 3 snorkelling sites on the outer reef, plenty of time in the water and importantly plenty of time to get in and out....More

1  Thank Christopher W
Reviewed 6 days ago via mobile
Amazing day on the Reef

I couldn’t recommend Poseidon highly enough. We took a one day tour to three locations on the outer reef to snorkel and had an amazing experience. We were so impressed by the professionalism of the staff, in particular Shay who helped my 72 year old,...More

1  Thank tinytravellers
Reviewed 1 week ago
Great first trip to the reef!

We had a group of five going to the GBR for the first time, some to scuba and some to snorkel. The Poseidon staff did a great job at accomodating all of us to make sure we had a wonderful experience on the reef. They...More

2  Thank katekmc
Questions & Answers
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26 May 2018|
AnswerShow all 2 answers
Response from DrumNBass | Reviewed this property |
The boat stops at a few different spots where you could dive or snorkel. Even if your husband is not into snorkeling, he can soak up some up some sun or just relax in the indoor area where you get food and drinks. All the... More