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
ReefCairns
Jorgensen Patch
An exposed, current-swept patch reef with walls, gullies, caves and swim-throughs – for experienced divers only.
Details need confirmationReefCairns
Pinnacle Reef (Green Island)
An exclusive small-boat mooring near Green Island with a quiet coral garden and frequent turtles.
Details need confirmationReefCairns
Round the Bend (Milln Reef)
A less-crowded Milln site following a curve in the reef edge.
Details need confirmationReefCairns
Saxon North Horn
The lightly dived northern tip of Saxon, with healthy corals and schooling fish in the current.
Details need confirmationReefCairns
Ski Slope (Flynn Reef)
A gentle reef slope that lets mixed groups choose their own depth.
Details need confirmationReefCairns
Sudbury Reef
A quiet mid-shelf reef and sand cay for private charters, away from the day-trip crowds.
Details need confirmationReefCairns
Tennis Court (Flynn Reef)
A bright sand arena ringed by coral – easy navigation, rays and turtles.
Details need confirmationReefCairns
The Nursery (Norman Reef)
A lightly documented Norman Reef mooring; details should be confirmed with operators.
Details need confirmationPinnacle/BommieCairns
The Pinnacles (Moore Reef)
Coral pinnacles and drop-offs on the edge of Moore Reef's horseshoe, with Maori wrasse, schooling jacks and reef sharks.
Details need confirmationWallCairns
Wild Side (Milln Reef)
The rarely dived weather side of Milln, with big bommies, clear water and bigger fish.
Details need confirmation