Western Australia
Diving in Nullarbor Caves
Under the Nullarbor Plain lie some of the longest and deepest underwater cave systems on earth: Cocklebiddy (more than 6 km of passage), Weebubbie, Tommy Grahams, Murra-El-Elevyn and Pannikin Plain. These are expedition cave dives requiring permits from the WA Department of Biodiversity, Conservation and Attractions, full cave qualifications and self-sufficiency in a place with no services.
Dive sites in this region
Cave/CavernNullarbor Caves
Cocklebiddy Cave
A straight, gin-clear flooded tunnel over 6 km long – once the world's longest known underwater cave.
Cave/CavernNullarbor Caves
Tommy Grahams Cave
A warm-water phreatic maze with a striking halocline, a CO2-filled inner chamber and a punishing entry.
Cave/CavernNullarbor Caves
Weebubbie Cave
A colossal flooded tunnel near Eucla with 150 m lakes, extreme clarity and deep Advanced Cave sections.
Cave/CavernNullarbor Caves
Murra-El-Elevyn Cave
Massive creamy-grey formations in a clear, relatively accessible Nullarbor cave – often the first dive of a Nullarbor trip.
Cave/CavernNullarbor Caves
Olwolgin Cave
Australia's longest known underwater cave – over 11 km of shallow phreatic passage on the Roe Plain.
Cave/CavernNullarbor Caves
Pannikin Plains Cave
The deep Nullarbor cave where a 1988 collapse trapped an expedition, inspiring the film 'Sanctum'.