Destinations
If you have dived in Great Barrier Reef before, please share your experiences: Dive spots you would recommend, which Dive Center you used, Fishes & Diving, Visibility, Currents, etc. Please post your comments in the section below, by doing so you will help fellow divers to plan their next trip
The Great Barrier Reef is a long reef system off Queensland, not a single dive site. Choose Cairns for the largest range of reef boats and northern liveaboards, Port Douglas for Agincourt day trips, Townsville for MOUA and Yongala access, or the Whitsundays for island holidays and Hardy Reef.
Updated 13 October 2026.
In this page you will find more detailed information about scuba diving in Great Barrier Reef.
Table of contents
Best Dive Review
| Base / route | Best planning fit |
|---|---|
| Cairns outer reefs | Day dives, beginner training and short overnight trips |
| Port Douglas / Agincourt | Reef day trips with a resort-and-rainforest stay |
| Ribbon Reefs / Cod Hole | Northern liveaboard itinerary |
| Osprey Reef, Coral Sea | More exposed offshore expedition, separate from ordinary reef day boats |
| Townsville / Yongala / MOUA | Choose between an experienced-diver wreck outing and a mixed-party reef trip |
| Whitsundays / Hardy Reef | Island holiday, outer-reef pontoon day or overnight stay |
Reef condition varies between sites. The AIMS 2025–26 assessment indicates early recovery across much of the Great Barrier Reef after recent bleaching; this is not an all-clear for every reef. Ask which sites the operator is currently visiting.
How to dive Great Barrier Reef?
A liveaboard gives you more time at sea, but it is not the only way to enjoy good diving. Compare Scubapro and OceanQuest for Cairns outer reefs, or Spirit of Freedom and Spoilsport for northern/Coral Sea programmes. Odyssey operates its Rowley Shoals programme from Broome in Western Australia and is not a GBR alternative. Kangaroo Explorer remains a historical profile without confirmed current dive departures.
Great Barrier Reef itinerary map
Select routes independently. Numbers show stop order; arrows show indicative direction. Port and reef references are not exact dive-entry positions.
- Cairns outer reefs · Scubapro example: Cairns Marlin Marina → Flynn Reef → Milln Reef → Thetford Reef → Cairns Marlin Marina.
- Ribbon Reefs · 3 nights: Cairns waterfront → Steve’s Bommie → Lighthouse Bommie → Cod Hole → Lizard Island.
- Coral Sea · 4 nights: Lizard Island → Cod Hole → Osprey Reef / North Horn → Steve’s Bommie → Cairns waterfront.
- Ribbons & Coral Sea · 7 nights: Cairns waterfront → Steve’s Bommie → Lighthouse Bommie → Cod Hole → Lizard Island → Osprey Reef / North Horn → Steve’s Bommie → Cairns waterfront.
- Minke season · Ribbon Reefs: Cairns waterfront → Steve’s Bommie → Lighthouse Bommie → Cod Hole → Lizard Island.
- Far North · northbound: Cairns waterfront → Cod Hole → Tijou Reef → Horn Island.
- Far North · southbound: Horn Island → Tijou Reef → Steve’s Bommie → Cairns waterfront.
- Ribbons and Beyond: Cairns waterfront → Norman Reef → Cod Hole → Tijou Reef → Steve’s Bommie → Cairns waterfront.
- Southern Adventure: Cairns waterfront → Myrmidon Reef → Flinders Reef, Coral Sea → Cairns waterfront.
- Far East Exploration: Cairns waterfront → Flinders Reef, Coral Sea → Magdelaine Cays reef → Lihou Reef → Herald Cays reef → Holmes Reef → Cairns waterfront.
- Yongala expedition: Cairns waterfront → SS Yongala → Cairns waterfront.
- Coral Sea Exploratory · 7 nights: Cairns waterfront → Holmes Reef → Bougainville Reef → Osprey Reef / North Horn → Cod Hole → Steve’s Bommie → Cairns waterfront.
- Northern Exposure · 7 nights: Cairns waterfront → Cod Hole → Raine Island reef → Great Detached Reef → Horn Island.
- Ashmore Exploratory · 7 nights: Horn Island → Great Detached Reef → Raine Island reef → Ashmore Reef, Coral Sea → Horn Island.
- Yongala & Coral Sea · 7 nights: Townsville · Breakwater Marina → SS Yongala → Flinders Reef, Coral Sea → Holmes Reef → Cairns waterfront.
- Coral Sea Odyssey · 10 nights: Townsville · Breakwater Marina → SS Yongala → Flinders Reef, Coral Sea → Holmes Reef → Bougainville Reef → Osprey Reef / North Horn → Cod Hole → Steve’s Bommie → Cairns waterfront.
- Port Douglas → Agincourt day trip: Port Douglas marina area → Agincourt reef system → Port Douglas marina area.
- Port of Airlie → Hardy Reef: Port of Airlie terminal → Hardy Reef pontoon area → Port of Airlie terminal.
- Townsville → John Brewer Reef / MOUA: Townsville · Breakwater Marina → John Brewer Reef · Coral Greenhouse → Townsville · Breakwater Marina.
- Townsville → SS Yongala · separate wreck trip: Townsville · Breakwater Marina → SS Yongala → Townsville · Breakwater Marina.
Connections show the order of regional references, not navigation tracks or guaranteed stops. Weather, permits and the booked itinerary determine access. Read the named boat review for exact joining instructions and any flight transfer.
Principal dive-site references
- Flynn Reef: Reef reference for sites such as Gordon’s Mooring and Tracy’s Bommie; not an exact dive mooring.
- Milln Reef: Reef reference; Swimming Pools and Whale Bommie are among the operator’s named sites.
- Thetford Reef: Reef reference; bommies, walls and swim-throughs, with site choice governed by conditions.
- Steve’s Bommie: Ribbon Reef pinnacle, known for concentrated fish life and smaller reef creatures.
- Lighthouse Bommie: Ribbon Reef pinnacle; seasonal minke encounters are never guaranteed.
- Cod Hole: Northern Ribbon Reef site associated with potato cod. Follow the dive briefing and wildlife rules.
- Osprey Reef / North Horn: North Horn reference at the northern tip of Osprey Reef. Offshore access depends on weather.
- Tijou Reef: Reef reference from a published survey, not the exact dive entry point.
- Norman Reef: Outer reef reference used in the Ribbons and Beyond sample departure.
- Myrmidon Reef: Outer shelf reef reference; strong ocean conditions require suitable experience.
- Flinders Reef, Coral Sea: Offshore reef reference, distinct from Flinders Reef near Brisbane.
- Magdelaine Cays reef: Reef-group reference. A diving visit does not include permission to land on closed cays.
- Lihou Reef: Large reef-system reference, not an exact mooring or entry point.
- Herald Cays reef: Reef-group reference. Access restrictions apply to landings on protected cays.
- Holmes Reef: Reef reference from published survey coordinates; actual dives depend on conditions.
- SS Yongala: Wreck reference; weather and currents control access. No penetration of this protected wreck.
- Bougainville Reef: Reef reference from published survey coordinates; not a guaranteed entry point.
- Raine Island reef: Offshore reef reference. A dive visit does not imply permission to land on the nesting island.
- Great Detached Reef: Far Northern Reef reference; exact dive sites are chosen aboard.
- Ashmore Reef, Coral Sea: Far Northern Coral Sea reef, not Ashmore Reef off Western Australia.
- Agincourt reef system: Reef-system reference, not an exact mooring. Silversonic chooses three sites for the day.
- Hardy Reef pontoon area: Historical AIMS platform reference for the reef area; the current pontoon and dive site are assigned by the operator.
- John Brewer Reef · Coral Greenhouse: Published installation reference; surrounding reef and Ocean Sentinels provide distinct dive/snorkel experiences.
Map references checked 13 October 2026: Published reef survey coordinates; Cod Hole; Steve’s Bommie; Lighthouse Bommie; Ashmore Reef; Lizard Island; Horn Island; Townsville marina; Yongala · Spirit of Freedom routes · Spoilsport routes · Pro Dive Cairns · Silversonic route · AIMS Agincourt station · Cruise Whitsundays itinerary · Port of Airlie · AIMS Hardy Reef reference · MOUA day trip · Coral Greenhouse installation coordinates · Published reef survey coordinates; Cod Hole; Steve’s Bommie; Lighthouse Bommie; Ashmore Reef; Lizard Island; Horn Island; Townsville marina; Yongala. Positions are for trip planning, not navigation.
Where to stay?
I usually use this website to book in advance my hotels in Great Barrier Reef as they usually have the lowest rates I find. I like it because it's free to cancel and change the dates.
Best time to dive in Great Barrier Reef
It is possible to dive the Great Barrier Reef all year long. Conditions differ across its length: summer warmth and rainfall, winter wind, and seasonal animal trips create different trade-offs. Northern dwarf-minke programmes have limited seasonal departures; coral-spawning nights require a specifically timed trip.
The official Australian cyclone season is November–April. Check Bureau of Meteorology warnings before travelling; sailings can change outside those months too.
Top liveaboards in Great Barrier Reef according to divers reviews
Dive courses
Cairns and other reef bases offer introductory dives and full certification courses. Compare the actual training schedule, equipment, medical screening and reef days. A certification card alone does not establish readiness for every remote liveaboard or wreck.
Scuba Diving conditions
There is no single reef-wide depth, visibility or temperature range that describes every booking. Shallow supervised reef dives and exposed ocean walls require different skills. Tell the operator your certification and recent experience; check the itinerary’s minimums rather than assuming all sites are beginner-friendly.
Tell the operator about relevant health conditions before paying. Queensland medical-fitness guidance explains screening and when medical clearance is needed. Arrange insurance that covers your planned diving and evacuation; a boat safety plan is not insurance.
Snorkelling in Great Barrier Reef
Travelling with a non-diver?
Mixed parties can choose a snorkel-and-dive day boat from Cairns or Port Douglas, or a Hardy Reef pontoon product from the Whitsundays. These sell specific non-diver fares; a liveaboard may apply different rates and supervision. Use the regional guides for dated examples and ask each liveaboard about cabin occupancy, water access and any non-diver discount.
The Great Barrier Reef has outstanding snorkelling possibilities. There are shallow coral gardens worth exploring in many places. Select a trip designed for snorkellers, with the right supervision and safe access for your group. Mainland beach swimming, island snorkelling and offshore reef excursions require different advice.
Fishes and Coral
Reef fish, turtles, rays and sharks are among the attractions, with large pelagic fish on suitable offshore sites. No animal encounter is guaranteed. Healthy-looking patches and bleached or damaged areas can occur within the same wider region; the latest scientific regional report is more useful than a blanket claim of untouched coral.
Diving Safety
If you are planning an upcoming dive trip or travelling to Great Barrier Reef, it is a really good idea to invest in travel insurance for scuba diving, because you never know what could happen and when you might need it (because accidents do happen!). I recommend this diving insurance as they offer worldwide coverage and focus on providing scuba divers a quality insurance and medical assistance service.
Great Barrier Reef diving questions
Where should I base a first reef holiday?
Cairns provides many day boats, training courses and liveaboards. Port Douglas suits Agincourt and resort stays; Townsville and the Whitsundays offer different reef experiences.
Is the Great Barrier Reef completely healthy or completely dead?
Neither description is accurate. AIMS reports regional trends, while local condition varies. Ask operators for their current sites and recent observations.
Do all reef trips include every fee?
No. Compare the total payable fare, including any reef charge, fuel surcharge, diving, rental and transfers. Do not add a fee twice when it is already included.
Leave an appropriate interval between your last scuba dive and flying, using DAN guidance and your operator’s requirements. Plan this before booking the return flight, including any scenic or island-transfer flight.
Photos Great Barrier Reef
Travel Guide
Now that you know all about the underwater world, you might want to start planning your scuba holiday! Check out our Great Barrier Reef Travel Review for information about how to get there, activities and excursions, where to stay, and more.
Diving Reviews for this region
Dive spots reviews in Great Barrier Reef
Liveaboard Reviews in Great Barrier Reef
Hi, my party of 4 adults visiting Cairns and we want to do helmet diving (coz we have never tried diving). We are in Cairns 27/9 – 1/10 2012. Please advise us best diving site for day trip. I understand there’s tours to Green Island or Outer Great Barrier Reef. Which is better? Which tour operator is better in terms of diving equipment and dive site? Thank you. Would really appreciate a reply asap as Sept. is peak season and we want to book early.
Outer barrier reef is so much better, great visibility and lots of marine life
I’m in school and i popped my pants help me ♡ ♡♡♡♡♡♡♡♡♡♡☆♡☆♡☆☆☆☆⊙⊙⊙⊙⊙⊙⊙°°°□9}3♤9~•□~\♤•◇□~♤8\□♤{~8\□{■~3□■{}◇●♤☆♤•●☆{♤}●•○■♤|•}{■
IM SO AUSTRALIA
Don’t go to the beginning of the GB reef since the reef is not attractive there! It gets interesting if you go to the beginning of the outer reef so this means you have to book a liveaboard of at least 5 days. Don’t do the three days ones, we thought the diving company had no respect for the underwater wildlife since they touched everything from coral, octopus, sea cucumber and more.
The best Island to go dive in the GB is close to green Island. The Coral still intact, there is thousand of different fish and lots of reef sharks!!! That was my first time in the water with Sharks and I am telling you even if your instructor tells you that they don’t attack it is still a CRAZY feeling.
Hello
I would some advice on how to plan a dive trip in September/ October. I want to dive the best location in GBR, the Yolanda and PNG. I have 14-21 days and an $8000 budget. I am open to liveaboad, resort or tour group. I live in San Diego.
Hi Ken!
We are in San Diego, too and I just came across your comment! Would love to meet up sometime to discuss your trip if you already went and to see some pictures!
I am on a business trip to Australia and want to get to the great barrier reef. Unfortunately I only have the weekend. I plan on flying from Melbourne Friday evening and returning Sunday night. I would like to stay at a nice (but reasonable under $200 a night) place that is convenient to both Cairns airport and good diving (too quick a trip to trek far). Any recommendations would be greatly appreciated. Trip Advisor hass too much to sift through and greatbarrierreef.org/tourism_diving.php does not give real specific recommendations.
Hi, if I had to choose for my family between diving on the Great Barrier Reef and Bali this summer (late June to early August) which is best? My wife and I have 3 kids: 16, 14, 10 (G/G/B). Two of us are reasonably experienced, the other 3 much more novice. I am considering a liveaboard for 3 nights out of Cairns, but maybe the diving is too advanced? Not really excited about day trips out of Cairns. And the diving around Bali is a question mark compared to the GBR. Thanks for any advice!
Hi Im planning a trip to Cairns during the end of june and I would like to know what the best dive zones are to see the most exciting sea life (turtles?). Which company is the best to book a day trip for introductory diving ?
Thanks
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what are you guys doing to stop the coal export from the very reef you support, experience and depend on? I dove there in 1986 when I worked on getting the rainforest listed as World Heritage. Now I am making plans to come back with my teenage son to show him this worldly wonder. Sadly with a heavy heart at what the reef now faces; climate change and short sighted Australian government!
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Went out on Spirit of Freedom recently and it was the BEST experience ever! Liveaboards are the only way to dive the best of the Great Barrier Reef as you go further to remote areas with no one else around. The reefs were very pretty! The crew were very knowledgeable and explained the coral bleaching events that happened 2 years ago. We saw plenty of colourful corals and a wide range of them too. I wasn’t expecting it to be that good, some of the best reefs I’ve ever seen surprinsingly. Swam with 30+ sharks at Osprey Reef with over 40m visibility. Trip of a lifetime.
We dived the Great Barrier Reef with Reef Encounter, we choose their. Top Deck Program it was amazing the staff were so helpful
We saw white tip Reef sharks, bronze whalers, barracuda, octopus, cuttlefish, nudibranchs and so many brightly coloured tropical fish.
We can’t wait to go back