

Best for advanced divers, 30m, boat entry, moderate current.
Cathedral Wall is a remote reef site in the Far Northern Outer Reefs, characterised by a steep wall that drops from 30 metres into deep water. The topography features substantial sea fans attached to the reef face. Divers can expect moderate currents, making this a suitable location for drift diving. Visibility ranges from 15 to 40 metres. Due to the depth and remote location, this site is intended for advanced divers only. A surface marker buoy is essential for safety. Water temperatures fluctuate between 25C and 29C throughout the year. The site supports a variety of reef fish and invertebrates typical of the region.
-12.06036, 143.95873
Run your dive between June and November when conditions are most reliable and pelagic sightings increase. Given the depth and current, a surface marker buoy is non-negotiable for your safety and your skipper's.
Access is only possible via multi-day liveaboard vessels, typically departing from Cairns. The site is located at Wishbone Reef in the remote Far Northern Great Barrier Reef.
Expected in this region. No sightings logged here yet.
Depth
30m
Visibility
15-40m
Skill Level
Advanced
Entry
Boat
Boat required
Water Temp
25-29°C
Current
Moderate
Typical Dive
45 min
Best Time
Jun, Jul, Aug, Sep, Oct, Nov
The site supports a diverse range of reef fish and invertebrates typical of the Far Northern Outer Reefs habitat.
No, Cathedral Wall is intended for advanced divers due to its depth, remote location, and moderate currents.
The reef top begins at 30 metres, with the wall extending well beyond recreational diving limits.
This is a boat-only dive site located 65 kilometres from the shore.
The most reliable conditions occur between June and November.
The site is extremely remote, which can delay emergency response. Divers should manage depth and bottom time carefully to avoid nitrogen narcosis, and sharks are common in the area.
Diving at Cathedral Wall in Far Northern requires the following certifications: Advanced, Deep. Always dive within your training limits.
A 3mm wetsuit is recommended for diving at Cathedral Wall in Far Northern. Water temperatures range from 25°C to 29°C.
Expect moderate currents at Cathedral Wall in Far Northern. Good buoyancy control and some drift diving experience is helpful.
Visibility at Cathedral Wall in Far Northern typically ranges from 15 metres to 40 metres. Conditions vary with weather, tides, and seasons.