

Blow Hole is a cave and reef dive that earns its name from the surging water movement through its underwater passages. Depths run from 14 to 25 metres in the deeper sections, with visibility regularly reaching 20 to 40 metres. Moderate currents are normal here, but they can strengthen, so stay alert and keep your buoyancy dialled in before entering any overhead sections. Wobbegongs and crayfish tuck into the cave structure, while gorgonian fans line the reef walls. Out in open water, trevally and batfish school regularly, and manta rays, reef sharks, silvertip sharks, turtles, and coral trout are all realistic sightings.
-24.11350, 152.71920
Plan your dive around the tidal cycle rather than just the time of day, as the current through the cave system is directly tied to tidal movement and can shift from manageable to genuinely challenging. The site dives best between May and September when conditions tend to be most settled.
Access is via a short boat ride (approximately 10 minutes) from the Lady Elliot Island Eco Resort. All dives are guided and operated by the resort's dive shop. Shore diving is not permitted at this site.
The primary hazard is the overhead environment of the cave. Divers should be comfortable with dark, enclosed spaces. The site is on the exposed side of the island and can be subject to strong currents.
Depth
14-25m
Visibility
20-40m
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
18-28°C
Current
Moderate
Best Time
May, Jun, Jul, Aug, Sep
Blow Hole in the Capricorn Islands, Queensland, ranges from 14 metres to 25 metres depth. This intermediate-level site requires Advanced Open Water certification due to the depth range and overhead environment features. The site is accessed exclusively by boat, with multiple dive operators offering charters from the nearby Capricorn Islands.
Divers must hold an Advanced Open Water certification to dive Blow Hole. The site's depth range of 14 to 25 metres, combined with overhead environment features and moderate currents, requires intermediate diving skills. Open Water certification alone is insufficient for this dive site in the Capricorn Islands.
Blow Hole offers encounters with manta rays, reef sharks, silvertip sharks, and wobbegongs. The site also features green turtles, batfish schools, trevally, and coral trout amongst the coral formations. The excellent visibility of 20 to 40 metres allows divers to spot larger pelagic species as they cruise past the reef structure.
The optimal diving months at Blow Hole are May through September during the Australian winter. Water temperatures during this period range from 18 to 28 degrees Celsius, with visibility typically reaching 20 to 40 metres. These cooler months offer the most stable conditions and clearest water for observing the site's diverse marine life.
Blow Hole is accessed exclusively by boat from the Capricorn Islands. Local dive operators provide boat charters, equipment rental, guided tours, and air fills for this site. Full facilities including dive shops, toilets, showers, and a cafe are available at the departure points, with no entry fee charged for diving the site.
The primary hazards at Blow Hole include overhead environment features and strong currents requiring intermediate diving skills. Moderate to strong currents flow through the site, necessitating Advanced Open Water certification and proper dive planning. Divers should maintain awareness of the overhead structures and current strength throughout the dive.
Blow Hole in Capricorn Islands is best suited for divers with some experience. You should be comfortable with your buoyancy and have logged at least 10 to 20 dives.
Yes, equipment rental is available at or near Blow Hole in Capricorn Islands. Contact local dive operators for specific gear availability and prices.
A 5mm wetsuit is recommended for diving at Blow Hole in Capricorn Islands. Water temperatures range from 18°C to 28°C.
Blow Hole in Capricorn Islands has depths ranging from 14 metres to 25 metres.