Meet the site
Swimming Pools is a pair of moorings on Milln Reef, Swimming Pools I and II, that Pro Dive Cairns lists as separate sites but which share the same character: coral outcrops and small bommies scattered over a sandy seabed at an average depth of about 10 m, with the deepest point around 21 m near an outer bommie. The name reflects how the sheltered sand patches between the coral look from the surface on a calm day. The layout is relaxed and easy, suiting divers of all levels and making it a good choice for a check-out or refresher dive. The signature sight is the schools of diagonal-banded sweetlips that hang in the shelter of the bommies, often dozens together, and Pro Dive Cairns also highlights nudibranchs, which can be found on almost every outcrop. The outer bommie is decorated with gorgonian fans. Turtles are frequently seen, barracuda cruise over the sand, and bull rays or cowtail rays rest on the bottom. Among the coral heads look for coral trout, anemonefish, parrotfish and damsels, and for garden eels and gobies on the sand. At night the Pools are an easy, rewarding site, with sleeping parrotfish, hunting barracuda and turtles, and plenty of crustaceans. The shallow tops of the outcrops are suitable for snorkellers when the tide is up. Because the two moorings are close together, the skipper chooses whichever is free and better sheltered on the day; the diving is essentially the same. Both moorings are well suited to a first dive after the long run out, and to divers who want to practise buoyancy over sand without worrying about depth.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Swimming Pools (Milln Reef) is recorded as Reef in Cairns. The listed access is boat (day trip). Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.
Topics flagged by the stored research
These are questions prompted by the existing notes, not a verified or complete hazard assessment.
- Current and timing
- Ask how the operator assesses the current window for the actual route. Historical tide notes are not a departure instruction.
- Other water users
- Ask about vessel activity, exclusion areas and the agreed surface arrangements.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.
Questions, answered
Is Swimming Pools (Milln Reef) suitable for my certification?
The record lists Advanced Open Water. That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.
Can I book Swimming Pools (Milln Reef) through YouDive?
YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.
What you might see
Diagonal-banded sweetlips (schools), nudibranchs, green turtles, barracuda, bull rays, cowtail rays, coral trout, anemonefish, parrotfish, garden eels, gorgonian fans
Location
Two adjacent moorings (Swimming Pools I and II) on Milln Reef, about 55 km east of Cairns, over coral outcrops and small bommies on sand.
Facilities nearby
Departs Reef Fleet Terminal / Marlin Marina, Cairns: toilets, cafes, paid parking; dive gear, tanks and lunch supplied on board
Before you make plans
Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.
Sources & further reading
prodivecairns.comsilverseries.com.aucairnsdiveadventures.com.auRecord updated 27 Sept 2026. Source claims are being reviewed.