Monument is a rocky reef snorkeling spot situated off the coast south of Sydney, near the Royal National Park coastline. The site takes its name from a prominent landmark along the escarpment and offers exposed ocean conditions with underwater boulders and kelp forests. This spot is best entered by boat or kayak from nearby launch points, as shore access is limited by rugged cliff terrain. Known locally among experienced snorkelers and divers, Monument rewards those who make the trip with clear oceanic water and encounters with schooling fish in the deeper reef channels.
Monument
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Wave Height 0.4 mSwell Period 6.8 sWind Speed 8.8 knPrecipitation 12 mmTidal Phase flood
Last evaluated
DANGER: Explicit Risks Present
Monument has hazards marked as danger. Entering the water here means you may face serious risks to your personal safety.
- Ocean swell exposure danger
The site is exposed to open ocean swells, creating large surging waves and strong surge around the reef, especially during southerly winds.
The spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
Logged by the community, confirmed by mods
High risk: Ocean swell exposure
The site is exposed to open ocean swells, creating large surging waves and strong surge around the reef, especially during southerly winds.
Moderate risk: Strong currents
Tidal currents and rip-like flows can sweep snorkelers away from the reef structure; only suitable for strong swimmers.
Moderate risk: Limited shore access
No direct beach entry — access requires boat or kayak. The rocky coastline has sharp platforms and no easy exit points.
Low risk: Boat traffic
The area is frequented by recreational and fishing boats; snorkelers must be vigilant and use a dive float.
Wildlife Guide
No wildlife notes for this spot yet.
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Getting in
Boat
Entry
Monument is located offshore between the Royal National Park and Stanwell Park. The nearest boat ramps are at Coalcliff or Stanwell Park. By car from Sydney, head south on the Princes Highway (M1), take the Stanwell Park exit, and follow Lawrence Hargrave Drive to the ramp area. Coordinates are approximately -34.45, 151.15.
Parking & facilities
Limited street parking available near the boat ramp at Stanwell Park Beach. No dedicated parking at the site itself.
parking
No fee for the snorkel site itself. Boat ramp access may incur a small council fee.
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About this data
- Conditions last evaluated
- Spot data last updated
- Data sources
- Open-Meteo (marine & weather conditions), tide predictions via UTide, community contributors (descriptions, hazards, marine life).
- License
- Spot content licensed under CC BY-SA 4.0. How's the Spot is open source.
Weather & swell ┬╖ Open-Meteo marine & weather APIs Tides ┬╖ UTide harmonic analysis Sea & safety ┬╖ community reports