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Detailed Shelly Beach dive-site guide with depth and marine-life observations.
Manly shore dive with kelp, rocks, and rich marine life.
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Shelly Beach is a protected Cabbage Tree Bay shore dive in Manly, Sydney, with boulder, kelp, and rocky reef sections packed with temperate marine life. The shallow entry and easy access make it a classic urban dive that works well for snorkelers and scuba divers alike.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
2m - 12m
Depth Note
The site is shallow across the bay, with a median depth around 6m and a bottom near 11-12m.
Best Season
Year-round; the calmest days are the easiest.
Typical Conditions
Sheltered west-facing bay, shallow reef and rock lines, and a very active temperate reef.
Hazards, restrictions, and access requirements.
Safety Notes
Stay aware of swimmers and beach traffic near the entry, and keep buoyancy tight around the rocks and kelp.
Access Restrictions
Shore entry via the Shelly Beach path and steps; weekends can be busy with beach users.
Legal Notes
Cabbage Tree Bay is a no-take aquatic reserve; follow reserve rules and keep clear of marine life.
Community notes to help plan your visit.
Scuba Diving
Easy shore dive for all levels, with a short path down to the entry and a shallow start along the rocks and kelp.
Freediving
The shallow sheltered bay makes short freedive sessions possible, but the site is better known for snorkel and scuba.
Snorkeling
Calm, shallow water and easy beach access make Shelly Beach one of Sydney’s stronger snorkel entries.
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Shelly Beach.
Directional shelter context for incoming swell.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
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Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Detailed Shelly Beach dive-site guide with depth and marine-life observations.
NSW Government page confirming the reserve setting and protected location.
Independent snorkel guide describing calm water and the reserve’s species richness.
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