Outer reef off Cairns, south of Flynn Reef, known for the Three Sisters and Whale Bommie, wall dives, swim-throughs and night diving. Green zone, boat access only.
Visibility at Milln Reef
Visibility at Milln Reef typically ranges from 15 to 25 metres, though it shifts with swell, wind and recent rainfall. August to early December for settled weather; good night diving; stingers roughly November to May generally offers the best conditions for diving here.
Air, gear and guides near Milln Reef
Browse dive shops in Cairns for fills, hire gear, servicing and guided dives at this site.
Region: Cairns, QLD
Skill Level: All Levels
Depth: 1-30m
Water Temperature: 24-30°C
Visibility: 15-25m
Best Time to Dive: August to early December for settled weather; good night diving; stingers roughly November to May
Marine Life: Resident turtles and whitetip reef sharks at Petaj, diagonally banded sweetlips, bumphead parrotfish, snapper and fusilier schools, barracuda, painted lobsters at night, occasional bull ray
Hazards: Depths to 30 m at Whale Bommie and The Oasis; waves break over Whale Bommie at low tide; marine stingers November to May
Facilities: None at the reef; boat access only by day boat or liveaboard from Cairns; GBRMPA public mooring (class C)