The 15 Best Scuba Diving Trips in Cairns

1.Great Barrier Reef Snorkeling and Diving Cruise from Cairns

★★★★★★★★★★4.5 · 3,714 reviews · from $190Our pick

Sail from Cairns aboard Evolution to two Outer Great Barrier Reef sites, usually Saxon or Norman Reef and Hastings Reef. You get about five hours in the water, gear, a barbecue lunch, and careful instruction. Add an introductory scuba session or 10-minute helicopter flight, and look for marine biologists such as Indy or Phil on board.

“Very good experience. Professional crew, a clean boat, and good quality snorkeling equipment. The snorkeling was great, and we seen a huge variety of fish. Remember to take a sea sick pill before you get on. The boat ride out and back can be a little rough with big waves. We’ve been snorkeling in a lot of different places, but this one was by far the best.”

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

★★★★★★★★★★5.0 · 1,895 reviews · from $181Top rated

You’ll cruise from Cairns aboard the 65-foot Ocean Freedom catamaran to Upolu Cay and Wonder Wall. Snorkel with a marine naturalist, join a glass-bottom boat tour, or add certified or introductory scuba sessions. The day includes gear, suits, breakfast snacks, seafood lunch, and afternoon treats.

“It was an amazing day. All the crew members were very friendly and helpful all day, they had a solution for everybody in every situation.”

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3.Cairns: Premium Snorkelling and Diving Reef Day Trip

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

Board AquaQuest at Cairns Marlin Marina for a 90-minute ride to two outer reef sites at Norman, Saxon, or Hastings reefs. You get guided snorkeling, full equipment, meals, hot showers, and up to five hours on the reef. Scuba options are available, with instructors such as Vanessa and Mazie helping first-timers.

“My anxiety went through the roof when I got there decided not to go in … but one of the staff was patient and got me on a one to one and I did go in … I never got your name but thank you so much for your patience”

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

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

From Cairns, Ocean Freedom takes you by fast 20-metre catamaran to Upolu Reef and Upolu Cay. You get guided snorkelling, glass-bottom boat trips, optional introductory or certified scuba, and six hours on the reef. Crew members including Ollie, Paul, Tori, and Blair are praised for calm instruction and attentive care.

“Great activity. The guides were simply amazing. So fun. Highly recommended it.”

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

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

Spend about eight hours on the Great Barrier Reef aboard Reef Magic’s outer-reef platform. Snorkel with supplied gear, join marine biologist talks, and use the glass-bottom boat, semi-submersible, and underwater observatory. Optional scuba, helmet walks, and helicopter flights cost extra. Guides including Ella, Ethan, Kaitlin, and Takuya add personal help and insight.

“The culture aspects highlighted by the crew were delivered in a very fun, interactive and insightful way. The snorkeling was done with safety first and the gear provided was 5*. Loved the pontoon and the lunch was great. All around great day and worth it.”

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

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

From Cairns Marlin Marina, spend five hours in the water at two outer reef sites with Reef Magic and Dreamtime Dive. Expect coral gardens, fish, turtles, rays, and possible sharks, plus Indigenous stories, music, marine science, morning tea, afternoon tea, and a buffet lunch. Scuba options are available for beginners and certified participants.

“This tour was definitely a highlight. The snorkeling was fun and we even got to see a turtle and a shark. The crew was also very nice :)”

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7.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 up to three certified scuba outings. The crew, including guides such as Matilda, Paul, and Vinnie, provides gear, instruction, meals, and reef guidance.

“Diving on the Great Barrier Reef was awesome, getting to see all sorts of marine life from sting ray to glimpse of a reef shark. Vanessa was awesome dive instuctor showing cool parts of the reef and going though a little tunnel. Overall it an amazing day on the Reef. 10/10”

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8.Cairns: Best Value All-inclusive Reef Trip With Scuba Dive

★★★★★★★★★★4.4 · 307 reviews · 1 day · from $184

Join Reef Experience from Cairns for two reef sites, one included scuba session, unlimited snorkeling, breakfast, BBQ lunch, and wine with cheese on the return trip. Marine biologists and instructors such as Dylan, Alexandra, Dan, and Tia help beginners feel safe, while certified divers can arrange extra sessions.

“It was a great experience. I did scuba diving twice; one intro and other paid. I got a bit more hang of it in the second time. It was awesome. Rest all is also great; the crew, food and wine, simply fantastic. 🔥🔥🔥🔥🔥”

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9.Ocean Spirit Sail to Michaelmas Cay Snorkel or Dive, from Cairns

★★★★★★★★★★4.5 · 170 reviews · from $197

Spend a full day sailing from Cairns to Michaelmas Cay, with four hours for beach snorkeling, an optional introductory scuba session, and a semi-submersible reef tour. Marine biologists explain the cay’s seabirds and coral life. Guides including Jayden, Kevin, and Luiza have led highly praised snorkeling outings.

“The grandkids loved the snorkelling and seeing all the fish, followed a turtle and saw the jumbo clam shells! Great boat ! Staff were very pleasant.”

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10.Great Barrier Reef with Cultural Guides-Dreamtime Dive & Snorkel

★★★★★★★★★★5.0 · 156 reviews · from $165

Set out from Cairns at 8:30 a.m. for Moore Reef, then Milln or Flynn Reef, with cultural guides such as Jed and Jacob sharing Creation Stories, tools, music, and reef knowledge. You get about five hours in the water, plus equipment, instruction, marine biology talks, morning tea, lunch, and afternoon tea.

“The two locations on the reef were beautiful, and the cultural presentations were amazing. Should let passengers know that seas can get rough before the tour starts. Common reef species should be included in presentation and a fish identification chart on the wall would be helpful. Lunch was pretty basic. This is not an Indigenous business.”

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11.Cairns: 2-Day Great Barrier Reef Dive and Snorkel Boat Trip

★★★★★★★★★★4.7 · 86 reviews · 2 days · from $466

Spend two days aboard Coral Sea Dreaming, a 16-meter yacht carrying no more than 12 people from Cairns to nine Great Barrier Reef areas. Snorkel at up to 25 moorings, add certified or introductory scuba onboard, and enjoy guided underwater sessions, homemade meals, a shared cabin, and a night session for certified participants.

“I loved my trip. Justin was a great captain, and he created a fun and relaxed vibe. Chad also guided my friend and I on our first introductory scuba dive and made us feel super comfortable down there. The snorkeling and diving exceeded expectations, and the crew is super safe and fun!”

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12.Cairns: Snorkelling and Diving Reef Day Trip

★★★★★★★★★★4.7 · 81 reviews · 8 hours · from $240

From Cairns Marina, Divers Den takes you 90 minutes offshore to two reef sites on Norman, Saxon, or Hastings reefs. You get up to four hours in the water, guided snorkelling, optional introductory or certified scuba, lunch, hot showers, and helpful crew such as Roman and Gavin.

“We picked this particular company as there was a substantial amount of time for snorkelling and diving. The staff were brilliant and our youngest child, who is nine years old, had a great guide throughout the day, who pointed out the various fish to her. She was the last snorkelled out of the water for both sessions as she loved it so much.”

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13.Cairns: 4-Day PADI Open Water Course

★★★★★★★★★★4.8 · 44 reviews · 4 days · from $704

Train with Divers Den over two days of pool work and theory, then head from Cairns to the outer Great Barrier Reef for four supervised open-water sessions. The small group is limited to 10, with equipment, transfers, PADI materials, and instruction included. Instructors such as Matt and Catalina are known for patient, clear teaching.

“My instructor Matt was fantastic - he had a lot of patience and was good at explaining the different exercises. He also gave us some useful tips.”

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14.Cairns: Green Island and Seawalker Helmet Dive Combo

★★★★★★★★★★4.6 · 43 reviews · 4 - 8 hours · from $196

From Cairns, take a catamaran to Green Island, a 6,000-year-old coral cay. Choose snorkeling or a glass-bottom boat tour, then walk the seabed in a Seawalker helmet at about 5 metres deep. You also get beach time, a self-guided eco walk, and access to the island pool.

“Activity got cancelled due to the weather so can't comment on the activity but GYG and the providers kept us updated so hence the 5 stars.”

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15.4-Day PADI Open Water Dive Course – Learn to Dive on the Great Barrier Reef

★★★★★★★★★★5.0 · 27 reviews · from $677

Start with classroom lessons and pool practice in Cairns, then complete four guided reef descents from the Evolution catamaran. With groups capped at eight, instructor Frankie offers close coaching as you work toward an internationally recognized PADI Open Water certificate.

“Frankly is the most knowledgeable, funny, and entertaining instructor I could’ve imagined. the way he explains the open water course makes complicated topics simple, couldn’t have asked for a better instructor! the food on the boat was goRead more”

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