Cairns Snorkeling Tours: Our Top 12

1.Ocean Freedom Great Barrier Reef Luxury Snorkel and Dive Cruise

★★★★★★★★★★5.0 · 1,895 reviews · from $181Our pick

Spend about nine hours aboard the 65-foot Ocean Freedom catamaran, visiting Upolu Cay and Wonder Wall. You get six hours on the reef, guided snorkeling, a glass-bottom boat tour, optional scuba, seafood lunch, and close crew support. The day suits first-time snorkelers as well as confident swimmers.

“Really great day. Staff were helpful and friendly and really accommodating. Food was amazing experience was amazing. Can't fault a single thing we had a fantastic time.”

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2.Cairns: Premium Snorkelling and Diving Reef Day Trip

★★★★★★★★★★4.7 · 1,528 reviews · 8 hours · from $166

From Cairns, AquaQuest carries you to two outer reef sites near Norman, Saxon, or Hastings reefs. You get guided snorkeling, gear, meals, hot showers, and time for optional scuba activities. Staff such as Vanessa and Mazie offer calm support for first-time underwater explorers.

“staff were very friendly and informative. snorkeling kit was good, we felt safe at all times food was decent provided us sea sickness pills (~$5)”

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3.Cairns: Outer and Coral Cay Snorkel and Dive Cruise

★★★★★★★★★★4.8 · 1,467 reviews · 9 hours - 1 day · from $183

Board Ocean Freedom’s fast 20-metre catamaran at Cairns for six hours at Upolu Reef and Upolu Coral Cay. You get guided snorkelling, glass-bottom boat trips, optional introductory or certified scuba, a substantial lunch, and plenty of reef time. Guides including Ollie, Paul, Tori, and Blair are praised for calm, careful instruction.

“The staff were all amazing. You can tell they really enjoy their job. The nibbles they provided throughout the day and the lunch was really good. I expected it to be alot busier given it was peak season but was fortunate to book onto a tour that only had just over 30 people compared to the max 75 capacity”

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4.Cairns: Great Barrier Reef Half-Day Snorkelling Tour

★★★★★★★★★★4.7 · 1,326 reviews · 4 hours · from $126

Reef Adventures Cairns takes you from the Pier Shopping Centre to the Great Barrier Reef on a fast boat with no more than 27 people. Expect 1.5 hours of guided snorkelling, quality gear, snacks, stinger suits in season, and help from guides such as Bradley, Lily, Caitlin, and Gus.

“We had a great time on Maverick on Feb 9 at 8am. The guides and captain were all helpful, knowledgeable, and professional. Sadly, many animals were shy so we didn’t see much a variety but the corals, blue starfish, and fish were so pretty. Much appreciated that they took pictures and posted them for us all to see too!”

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5.Snorkel & Dive the Reef: Sustainable, Scientific & Cultural Tour

★★★★★★★★★★4.5 · 841 reviews · from $232

Travel by fast catamaran from Cairns to Reef Magic’s outer-reef Marine World platform. Snorkel in a sheltered lagoon, join marine biologist talks, or stay dry with glass-bottom boat, semi-submersible, and observatory viewing. Optional scuba, helmet walks, and helicopter flights cost extra.

“Good trip. Husband got to dive and I got to have my feet in the ocean off 5he pontoon. Glass bottom boat and semi submersible were also included. We got a helicopter ride too (extra, but worth it).”

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6.Cairns: Great Barrier Reef Premium Diving Full Day Tour

★★★★★★★★★★4.7 · 792 reviews · 9 hours · from $127

From Cairns Marlin Marina, Reef Magic and Dreamtime Dive & Snorkel take you to two outer reef sites for five hours in the water. Expect coral gardens, turtles, rays, reef fish, cultural stories, marine science talks, buffet lunch, and optional introductory or certified scuba.

“Jen was amazing and did everything she could to make sure I had an amazing day, the whole crew were super friendly and experts in their fields which made it a really special and informative experience”

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7.Cairns: Fitzroy Island Ferry w/ Snorkel, Lunch, Tour Options

★★★★★★★★★★4.4 · 715 reviews · from $69Best value

Take Sunlover Reef Cruises from Cairns to Fitzroy Island for roughly four and a half hours of free time. Swim from the beach, walk to Nudey Beach, follow rainforest trails, or add snorkel gear, lunch, and a glass-bottom boat ride. Guides including Andrea, Victor, Georgina, and Carmen may lead optional activities.

“Brilliant snorkelling - saw turtles and many Fish Great vegetarian boxed lunch”

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8.Silverswift Dive and Snorkel Great Barrier Reef Cruise

★★★★★★★★★★4.5 · 432 reviews · from $212

Spend about 10 hours aboard Silverswift, a 29-meter catamaran from Cairns, visiting up to three outer reef sites. Snorkel, try one or two introductory scuba sessions, or complete three certified sessions with crew support. Lunch, tea, equipment, showers, and prescription masks are included.

“Comfortable boat. Attentive and helpful scuba diving instructor for introductory dive. Wonderful to have him trust us to follow him on our own. The dive was a decent amount of time, over a half hour at least.”

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9.Cairns Half Day Tour a Great Barrier Reef Snorkeling Experience

★★★★★★★★★★5.0 · 386 reviews · from $128

Board a fast boat at Cairns Marlin Marina for a half-day visit to Upolu Reef. Expect about 1.5 hours in the water with an English-speaking guide, supplied snorkel gear, seasonal stinger suits, snacks, and a maximum of 27 people. Guides such as Sophia, Lilly, Bradley, and Renee may lead the swim.

“Don't go out on a bad weather day. It can get very choppy and make the day unpleasant. Plenty on sick bags handed out. Crew were great”

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10.Snorkelling and Glass Bottom Boat at Green Island from Cairns

★★★★★★★★★★4.0 · 386 reviews · from $107

Take a fast catamaran from Cairns to Green Island, a 6,000-year-old coral cay with rainforest, white beaches, and reef life. Your day includes snorkeling gear, a glass bottom boat trip, island walk, pool access, and return transfers. Guided snorkeling is optional.

“Snorkelling at the beach was nice. The water was clear and warm. Everything else about Green Island sucked. One overpriced cafe with nowhere near enough tables and chairs for the hundreds of people arriving by boat loads. Staff frazzled and rude from the pressure of trying to cope. The pool was crowded and, like the cafe, only half a dozen tables and chairs the only other alternative was hot concrete in full sun. $45 to sit on a beach chair at the beach. Probably caters well for the small resort but hundreds of tourists arriving by boat completely overcrowd the place, irresponsible of the boating companies who know full well…”

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11.Cairns: All-Inclusive Great Barrier Reef Half-Day Snorkeling

★★★★★★★★★★4.9 · 373 reviews · 5 hours · from $140

From Cairns Marlin Marina, a fast purpose-built boat takes you to one of 15 Outer Reef sites. You get more than two hours in the water, guided by marine biologists such as Sophie, Seb, Monica, and Cam, with gear, stinger suits, snacks, and prescription masks included.

“it was an amazing experience, 100% recommended, the crew made us feel safe and we could see they love what the do”

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12.Snorkelling or Glass Bottom Boat at Green Island from Cairns

★★★★★★★★★★4.0 · 282 reviews · from $87

Take a fast catamaran from Cairns to Green Island, then choose beach snorkelling or a glass-bottom boat tour. You also get a self-guided rainforest walk, island pool access, and visitor facilities. Marine biologist Clarissa leads an informative reef talk on some departures.

“Very nice staff. Excellent experience. Enjoyed the tour and the boat ride. I would definitely recommend this company.”

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