Queensland
Diving in Cairns
Cairns is the busiest dive hub in Australia. Day boats leave every morning for the outer reef sites 60–90 minutes offshore: Norman, Saxon, Hastings, Flynn, Milln, Thetford and Moore reefs, each with a handful of moored sites in 5–25 m, gentle coral gardens, turtles, reef sharks and, on the better sites, giant clams and Maori wrasse. Liveaboards leave from here for the Ribbon Reefs and the Coral Sea.
THE LOCAL PLANNING BRIEF
Understand the options around Cairns
Use Cairns as a departure base, then choose the actual reef trip
A Cairns accommodation booking does not identify which reef itinerary you will join. Compare the operator’s meeting point, transfer inclusion and expected time away before choosing where to stay. Ask how introductory activities, certified diving and snorkelling are organised if your party has different interests. The regional site list is useful for learning names and comparing records, but should not be treated as a promise that a day boat visits every listed reef.
One useful question: Which of the reefs in your proposed itinerary can realistically be reached on this departure, and what could change?
What this regional directory records Counts describe published records, not bookable trips or confirmed open sites.
There are 82 published site records in Cairns. The recorded categories include reef (43), pinnacle/bommie (18), wall (17), shore/rock platform (3). These categories reflect the database; they are not a ranking, a conditions report or an assessment of your suitability.
Use the Cairns site cards to compare recorded access and depth, then open the individual pages for the map accuracy and source notes. Sites grouped in a region are not necessarily close enough to combine in one day.
Research operators in Queensland →Ask before booking
- Which port and vessel will run our trip?
- Is the named reef a likely itinerary or a confirmed destination?
- What changes if our island transfer or boat departure moves?
Save the answers with the contact name and date. Separate confirmed arrangements from items still waiting for a reply.
Record your trip questions →Questions, answered
How do I choose a dive in Cairns?
Begin with the individual site and its source notes, then discuss the proposed trip with a local provider. The 82 published records are research options, not a list of trips available today. Match the plan to your training, recent experience and the operator’s current requirements.
When should I visit Cairns for diving?
Choose dates with a provider who runs the activity you want, then discuss seasonal patterns, recent conditions and alternative itineraries. A generic best-month claim cannot establish the conditions at your exact site or guarantee a wildlife encounter.
Can I use these maps to enter or navigate a dive site?
No. Recorded and approximate map positions support orientation only. Confirm the exact access, permissions, meeting point and route with the responsible local provider or manager.
Regional planning context: Tourism and Events Queensland — accessing the Great Barrier Reef ↗. Directory counts come from published YouDive records. Individual site claims remain subject to their source and review notes.
Dive sites in this region
Shore/Rock PlatformCairns
Nudey Beach (Fitzroy Island)
A secluded coral-rubble beach with fringing reef around the headland, reached by a rainforest walk.
ReefCairns
Paradise Reef (Breaking Patches)
A small green-zone reef, exclusive to one operator, where coral trout and red emperor have rebounded.
ReefCairns
Pirates Cove (Hastings Reef)
A sheltered cove with unusual tongue-like coral formations at 14-18 m.
ReefCairns
Point Break (Flynn Reef)
Calm, clear water in a current eddy with compact coral bommies; the northerly-wind option on Flynn.
ReefCairns
Pretty Patches
An untouched patch reef open to only two operators, with tightly grouped bommies and common turtles.
ReefCairns
Sandra's (Norman Reef)
A shallow shelf of white sand and coral bommies above a deep wall, with humphead parrotfish and a friendly Maori wrasse.
ReefCairns
Sandra's (Saxon Reef)
A sandy bay of coral islands with many anemonefish species and resting whitetip sharks – excellent for snorkellers.
Pinnacle/BommieCairns
Sandra's Peaks (Saxon Reef)
Twin coral peaks and a fish-filled valley a short swim offshore from Sandra's shallow bay.
ReefCairns
Saxon Coral Gardens
A gentle coral slope to sand with garden eels, juvenile fish in the Fishbowl and occasional pygmy seahorses.
WallCairns
Saxon Wall
Saxon's exposed Wild Side: a steep bank into a deep wall with wobbegongs under the ledges.
Pinnacle/BommieCairns
Split Bommie (Hastings Reef)
Cleft bommies with a 12 m swim-through and a current line where sharks and pelagics patrol.
Pinnacle/BommieCairns
Stepping Stones (Hastings Reef)
A line of coral bommies stepping out from the boat – three or four in one easy, sheltered dive.
ReefCairns
Sunlover Pontoon Reef (Moore Reef)
An easy, well-run pontoon dive on a sheltered nursery reef, with intro, refresher and helmet options for non-divers.
WallCairns
The Drop (Milln Reef)
A steep drop-off with wind- and wave-carved coral formations, used when the wind is from the north.
WallCairns
The Edge (Milln Reef)
A life-draped wall with an advanced drift along a line of deep bommies with barracuda and sharks.
Pinnacle/BommieCairns
Three Sisters (Michaelmas Reef)
Three surface-reaching bommies standing like a city skyline behind Michaelmas Reef.
Pinnacle/BommieCairns
Turtle Bommie (Hastings Reef)
A bommie cluster with resident turtles and a deep northern drop with sea fans and whips.
ReefCairns
Tusa Canyons (Thetford Reef)
Canyon-like sand channels between tall coral bommies – one of Thetford's two signature sites.
Shore/Rock PlatformCairns
White Rock (Fitzroy Island)
Fitzroy's deeper northern reef around a bird-covered rock, with turtles, rays and reef sharks.
WallCairns
Wild Side West (Norman Reef)
Bob's Bommie, a coral tower beside the wall, on Norman's unpredictable Wild West.
WallCairns
Wonder Wall (Upolu Reef)
Coral walls and surface-reaching bommies on Upolu's outer edge, with reef sharks and turtles.
ReefCairns
Fish Town (Milln Reef)
A fish-rich Milln mooring with schools, cleaning stations and turtles.
Details need confirmationReefCairns
Great Adventures Pontoon Reef (Moore Reef)
Pontoon diving combined with a Green Island stop – easy certified and intro dives for mixed groups.
Details need confirmationWallCairns
Hastings Wall
The outer wall of Hastings Reef, with coral growing even inside its undercuts and caves.
Details need confirmation