Critically EndangeredGiant Clam
Tridacna gigas
The summit of a submarine volcano rising from the Java Trench, with a shelf so narrow that the wall begins almost at the shoreline. Perpendicular Wall is a sheer cliff that falls away into the abyss and is rated one of the finest wall dives in Australia. Thundercliffe Cave lets you enter underwater, surface inside the cave and carry on exploring it on foot.
Depth
4–40 m
Recommended level
Open Water on the shallow reefs; advanced on Perpendicular Wall
Current
Strong on the wall
Christmas Island Marine Park; operators need a specific permit to enter
Sources consulted: Parks Australia (Christmas Island National Park) · PADI · Extra Divers Christmas Island · Dive Worldwide · Indian Ocean Experiences
Which other dive sites are like this one?
Same country: Australia
Same country: Australia
Same country: Australia
Based on what we already know about this dive site.
Access
Flight from mainland Australia; boat dives a short distance out and some from the shore
Best season
Whale sharks from November to April; the best sea conditions in the dry season, from June to August
Plan your dive
Same country: Australia
Australia