Aladdin's Cave is a far-northern site visited on Mike Ball's Far North Coral Sea Exploratory, on the day the expedition also stops at Stanley Island (Yindayin) to see ancient Aboriginal rock art. Mike Ball describes soft corals on deep walls for the day's dives; Dive Pacific, writing about a Spirit of Freedom far-north trip, groups Aladdin's Cave with Perisher Blue and Turmoil as coral garden sites. The name suggests treasure hidden in a cave, and the site likely features an overhang or cavern along with its walls and gardens.

The walls are covered in soft corals – pinks, purples, oranges – and gorgonian fans, with hard corals on the shallower gardens. Reef fish, sharks and turtles are common on the far-northern reefs. Stanley Island, in the Flinders Group, holds rock art depicting turtles, eagle rays, crocodiles and even 16th-century tall ships, a reminder of the area's long history.

Aladdin's Cave suits experienced divers on a far-northern expedition. Getting here is itself an expedition: the far-northern reefs lie hundreds of kilometres north of Cairns, are visited by only a handful of liveaboards in the October–December window, and are many hours from medical help, so divers should be current, self-sufficient, carry an SMB and audible signal, and dive conservatively.

Liveaboard only – there are no day boats, resorts or public moorings this far north. Mike Ball Dive Expeditions' Spoilsport runs 7-night 'Northern Exposure' expeditions between Cairns (Trinity Wharf) and Horn Island in the Torres Strait each November (northbound and southbound, up to 27 dives), plus a 7-night Far North Coral Sea Exploratory round trip from Cairns in October. Spirit of Freedom runs 7-night far-north expeditions from Cairns in October–December, and Professional Dive Services' MV Kalinda has run longer (13-night) Cairns–Horn Island trips.

Horn Island has daily scheduled flights to Cairns (book separately; allow 24 hours after diving before flying). The far-northern reefs are roughly 500–650 km north of Cairns – one to two days' steaming each way.

The far-northern reefs are only diveable in a narrow weather window. The south-east trades blow hard from about April to September and make the long open-water passage and the exposed outer walls impractical, so expeditions run in the transition period, typically October–December, when winds are lighter; the northerly monsoon, storms and cyclones (December–April) close the season. Even in the window, exposed shelf-edge walls (Tijou, Great Detached, Raine) need calm days, and skippers switch between reefs to find shelter.

Strong tidal currents and upwellings run along the continental shelf and through reef openings – channel sites are timed to slack water. Visibility varies from about 12 m to 40 m+ depending on tides and any rain. Marine stingers are present from November.

Descend the wall to 18–25 m to see the soft corals, then drift or swim back up into the coral gardens at 8–12 m, finishing with a safety stop over the reef top.

Liveaboard only: Mike Ball Dive Expeditions (Spoilsport – 7-night Northern Exposure Cairns↔Horn Island, November; 7-night Far North Coral Sea Exploratory, October); Spirit of Freedom (7-night far-north expeditions, October–December); Professional Dive Services MV Kalinda (occasional long expeditions). Requirements typically Advanced certification or 15+ logged ocean dives.