This dive site is a spectacular limestone reef system off Rottnest Island, famous for its intricate caves, large swim-throughs, and dramatic ledges. The complex topography creates a stunning underwater landscape and provides shelter for a high diversity of marine life. It is particularly renowned as a winter aggregation site for Grey Nurse Sharks.
North Lump
Deep limestone reef with caves, swim-throughs, and nurse sharks.
Boat Access
24m Avg Depth
32m Max Depth
About this dive site
Diving
Plan Your Visit
sharkcavernswim-throughwall diveadvanced onlyboat divewide angleaustraliaperth
Things to Note
Difficulty:
Advanced
Deep profile (30m+), potential strong currents, and overhead environments.
Hazards:
currentdepthoverhead environmentsboat traffic
Current Strength:
Variable
Plan Your Dive
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Limestone pinnacle with caves, swim-throughs, and diverse marine life.