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Community guide on the Castle Rocks restricted area and Shark Alley reef context.
Shark Alley
Shallow False Bay reef with seals, kelp, and swim-throughs.
FreedivingScuba DivingSnorkelingShoreBeginner3m - 5m
Reef
Miller's Point shore site inside the Castle Rocks restricted area, best for calm-day kelp and wildlife dives with careful entry and exit timing.
About Shark Alley
Shark Alley is a shallow False Bay inshore reef at Miller's Point in the Castle Rocks restricted area, with shore entry from the tidal pool when conditions are calm. Kelp forests, rocky ledges, and swim-throughs make it a compact but lively dive, and seals are the headline encounter with occasional sharks and other reef life in the mix. It is best treated as a permit-managed, conditions-sensitive site where a clean entry and exit matter as much as the marine life.
Safety & Access
Site Conditions
Dangerous wildlife
Safety Notes
Seals may approach and nibble fins; treat them as wild animals and avoid playing with them.
Access Restrictions
Permit-managed access applies in the Castle Rocks restricted area and only the calm shore entry should be used when the exit is clean enough.
Legal Notes
Follow the marine park and site rules, and do not collect or fish in the protected zone. Check the current permit status before going.
Where Is Shark Alley?
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Local Intel For Shark Alley
Community notes to help plan your visit.
Scuba Diving
Very shallow scuba dive, around 3–5 m depth.
Freediving
Freediving is possible on calm days in the shallows, but the site rewards people comfortable with kelp, variable visibility, and a careful shore exit.
Snorkeling
Snorkeling is possible only when the inlet is calm, and it works best in the shallow kelp fringe rather than as a long open-water swim.
Wildlife at Shark Alley
Species commonly reported at this site, with direct links into their wildlife guides.
Research Estimate At Shark Alley
Access · 4/5Simple entry
Research estimate
Aquatic Life · 5/5Exceptional variety
Research estimate
Facilities · 2/5Limited facilities
Research estimate
Current · 2/5Light current
Research estimate
Surge · 3/5Moderate surge
Research estimate
- VisibilityResearch estimate
- 6m
