The verdict
Our pick
Port Douglas: Outer Great Barrier Reef Cruise & Snorkeling★ 4.85 (1,462) · 8h
Best value
Port Douglas: Low Isles Sailing Cruise & Reef Snorkel Tour★ 4.60 (262) · 7h
Top rated
Port Douglas: Outer Reef Snorkel & Dive Small Group Tour★ 4.98 (1,556) · 7h 15m
All 11 options, side by side
✓ 2026-09-29Real price per person across the 11 options: AU$ 235–AU$ 639 (median AU$ 328). With an extra fee to pay on site: 3 of 11.
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Port Douglas: Low Isles Snorkelling Half Day with Glass Bottom BoatYou snorkel the Low Isles coral gardens with or without a guide, take a guided walk around the island, and ride the glass-bottom boat to see the reef from below — all in four hours from Port Douglas with a max group of 23. Snorkelling gear, coffee, tea and snacks are included; pick morning or afternoon depending on your schedule.Is it for me?Right for snorkellers of any level who want to see the reef without arranging their own transport or gear — the 4-hour window and small group size mean you're back in Port Douglas by early afternoon or evening, depending on which departure you choose.
Port Douglas Reef Tour: Snorkel, dive & submarine in one dayYou board a catamaran in Port Douglas, spend ninety minutes crossing to Agincourt Reef, then get 3.5 hours to snorkel, watch the submarine tour, or try an introductory dive — all with gear, lunch, and a marine biologist on hand. No experience needed, and you can change your date for free if your plans shift.Is it for me?Right for first-time reef visitors or non-swimmers who want to see the Great Barrier Reef without committing to diving or snorkeling alone. The 3.5 hours at the reef gives you time to try one activity properly instead of rushing, and the pontoon setup means you're never far from help or a dry place to rest.
Port Douglas: Low Isles Sailing & Snorkeling with Marine BiologistYou sail to Low Isles coral cay on a small catamaran, arriving before the crowds. Spend four and a half hours snorkeling in the sheltered lagoon with a marine biologist, exploring the same reef from a glass-bottom boat, or walking to the historic lighthouse. Lunch and morning and afternoon tea are included. The crew handles all the logistics—you just show up with a swimsuit and sunscreen, and they get you back to Port Douglas by 4pm.Is it for me?A good fit if you want to snorkel the Great Barrier Reef without the crowds or the long boat ride—Low Isles is a short sail from Port Douglas, and the 33-passenger limit means you're not jostling for space. Plan for a full day on the water with some physical activity: you'll be moving between the boat, the glass-bottom tender, and the water via ladders, so good mobility and swimming confidence matter.
Port Douglas: Great Barrier Reef Snorkel & Dive CruiseYou get picked up from your Port Douglas hotel, spend five hours snorkeling or diving across three Agincourt Reef sites with a marine naturalist guide, eat a tropical lunch on the boat, and return in the afternoon. Snorkel gear, entry fees and all water time are included. The catamaran is modern and fast, so you're not wasting hours on the ride out.Is it for me?Right for snorkelers and divers of any level who want a full day on the Outer Reef without arranging transport or gear — hotel pickup and all equipment are handled. Plan for a full day out of Port Douglas, which is what gives you three reef sites and five hours in the water instead of a rushed half-day trip.
Port Douglas: Outer Reef Sail & Snorkel with Mackay Cay StopYou’ll step straight onto a catamaran in Port Douglas and sail out by wind power toward Mackay Cay’s white sands. Guided by local marine biologists, you’ll snorkel vibrant reefs teeming with life, try out a glass-bottom boat ride if you want a break from swimming, and share lunch with fellow travelers before heading home sun-warmed and salt-haired.
Port Douglas: Low Isles Snorkeling & Sunset Sail CatamaranYou’ll step aboard a luxury catamaran in Port Douglas and sail to Low Isles for guided snorkeling with a marine biologist, explore coral gardens or relax on white sand beaches, enjoy afternoon tea and canapés as you watch sunset over the Coral Sea — all with expert crew and everything included for an easygoing day.
Port Douglas: Mossman Gorge River Drift & Daintree WalkYou float through Mossman River on a snorkeling drift, experience a traditional Kuku Yalanji smoking ceremony with body paint, and walk through Daintree National Park with a guide who explains the rainforest's ecology. Lunch, transfers from Port Douglas, and all gear are included; the whole day takes around 7–8 hours and you spend more time in the water than on any competing tour.Is it for me?Book this if you want to spend a full day in the rainforest without arranging your own transport or timing multiple stops—the fixed itinerary moves you from river to ceremony to forest walk in one seamless day, and the early pickup means you're in the water while other tours are still loading their vans.
Port Douglas: Great Barrier Reef Snorkeling & Diving CruiseYou board a small-group catamaran in Port Douglas, visit three outer reef sites with a marine biologist guide, and choose between snorkeling with a guided tour or up to three certified dives. Lunch, morning and afternoon tea are included, as is hotel pickup. The day runs full but the boat's design and capped numbers mean it never feels rushed or crowded.Is it for me?Right for experienced snorkelers and certified divers who want smaller groups and access to outer reef sites most day boats skip. Plan for a full day on the water — that's what the three-site itinerary and multiple dives need — and bring a moderate level of fitness; the boat and reef work are not strenuous, but the day itself is active.
Frequently asked questions
Can I book with free cancellation?
Yes: 11 of the 11 options offer free cancellation, so you can book now and confirm your plans later.
How long do these experiences last?
Most options last half a day or longer. There are also shorter and longer formats to fit your itinerary.
Which one is the travelers' favorite?
Port Douglas: Outer Great Barrier Reef Cruise & Snorkeling is the travelers' favorite, rated 4.85 out of 5 across 1,462 reviews.
More things to do in Port Douglas
Daintree Rainforest Tours15 optionsPort Douglas Sunset Cruise5 optionsPort Douglas Airport Transfer6 optionsMossman Gorge Tours11 optionsPort Douglas Rainforest10 optionsBoat Tours in Port Douglas20 optionsMossman Gorge Rainforest Tours6 optionsScuba Diving in Port Douglas5 optionsDaintree Rainforest Boat Tours7 options
