Little Armstrong Bay
Shallow bay with spectacular limestone caves and swim-throughs.
Boat Access
6m Avg Depth
10m Max Depth
About this dive site
This dive site features a stunning limestone reef system honeycombed with caves, ledges, and swim-throughs. The clear, shallow waters host a rich diversity of temperate marine life, including the iconic Western Blue Devil and large crayfish. It is an excellent site for photographers and for exploring unique underwater topography in calm conditions.
DivingFreedivingSnorkeling
Plan Your Visit
limestone reefcavernswim-throughbeginner friendlymacro photographywide anglesharkturtleaustraliaperth
Marine Life
Western blue devilharlequin fishcrayfishwobbegong sharkport jackson sharkbuffalo breamboxfishsoft coralssponges
Things to Note
Difficulty:
Beginner
Shallow, protected bay with clear water and minimal currents, ideal for training and new divers.
Hazards:
boat traffic
Current Strength:
Mild
Nearby Dive Sites
Explore other dive sites in the area
Australia, Rottnest Island Rottnest Island Marine Reserve
Limestone reef with caves, swim-throughs, and diverse marine life.
Australia, Rottnest Island Rottnest Island Marine Reserve
Shallow limestone reef with caves and abundant temperate fish.
Australia, Rottnest Island Rottnest Island Marine Reserve
Sheltered bay with limestone caves and swim-throughs.
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