Club 10 is a Passions of Paradise site on Milln Reef, and the company uses it to show off what the reef does best. Its description is simple: acres of beautiful shallow coral with two large coral-draped bommies. The shallow garden is extensive and in good light is a mass of hard coral, branching, plate and boulder forms, with soft corals and anemones between them, thick with damselfish, chromis, anthias and other small reef fish.

The two bommies rise from the sand beside the garden and give divers something to aim for; their flanks are covered in coral and host larger fish such as coral trout, sweetlips and emperors, while trevally and other pelagic fish sweep past. Out on the sand between the bommies, colonies of garden eels rise and fall. Because so much of the reef is shallow, the dive works well for mixed groups and for divers who want long, relaxed bottom times without going deep, and the site is equally good for snorkellers, who can drift across the garden and look down on divers around the bommies.

Turtles are common on Milln and may be seen. Club 10 is not a dramatic wall or current site, and for divers seeking depth the nearby Three Sisters or Whale Bommie are better choices, but as an introduction to the outer reef or a gentle second dive it is hard to fault. Detailed published depth information is limited, so the depths here are estimates.

The site is also a good place to see the reef's full range of coral growth forms in a single short swim across the garden.

Boat access only. Cairns day boats leave from the Reef Fleet Terminal (1 Spence Street) and the neighbouring Marlin Marina on the city waterfront, with check-in between about 7:00 and 8:00 am; most operators run transfers from city and northern-beaches accommodation, and there is paid parking near the terminal. The run of about 55 km out through Trinity Inlet and across the lagoon to Milln Reef takes around 76 minutes on a fast catamaran and noticeably longer on slower dive boats or into a south-easterly chop.

Club 10 is used by Passions of Paradise on its sailing-catamaran day trips; it is not a regular stop for the other operators. Enter from the stern steps.

The prevailing south-east trade winds (typically 15-25 knots from April to September) are what limit Cairns outer-reef diving: above about 25 knots trips may be cancelled, and exposed eastern moorings are used only in light winds. Summer northerlies are gentler but make north-facing moorings choppy. Box jellyfish and Irukandji are present from about November to May (stinger suits on every dive), and the cyclone season runs November to April, when a system in the Coral Sea can close the reef for days.

Visibility drops after heavy rain and strong winds; spring is usually calmest and clearest. Club 10 is a shallow, sheltered mooring suited to snorkellers and new divers in normal trade-wind conditions.

Descend to the sand beside the nearer bommie at about 12-15 m, circle it, then cross to the second bommie before returning over the shallow coral gardens at 3-6 m. Look for garden eels on the sand between the bommies. Safety stop over the reef top.

Passions of Paradise – regular day-trip mooring on Milln; Milln is also worked daily by Silverswift and Passions of Paradise and on Pro Dive Cairns liveaboards; the mooring used on any day is chosen by the skipper according to wind, tide and other boats