Sue's Groyne (often mistakenly called Sue's Groin) is a rocky breakwater extending into the calm, sheltered waters of Mangles Bay in Rockingham, south of Perth. The granite boulders of the groyne create a rich artificial reef teeming with marine life, making it a popular shore-entry snorkel and night-dive site. The shallow, protected waters on the northern side of the groyne offer good visibility on calm days, while the southern side can be murkier. Snorkellers regularly encounter octopus, cuttlefish, pipefish, nudibranchs, and a variety of reef fish darting among the weed-covered rocks. Its easy accessibility and protected setting make it a favourite for beginners and experienced snorkellers alike.
Sue's Groyne
BeginnerMAYBE
MAYBE
Fair. Experienced snorkellers only.
Showing last known conditions
Wave Height 0.9 mSwell Period 11 sWind Speed 2.8 knPrecipitation 0.7 mmTidal Phase ebb
Last evaluated
The spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
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Low risk: Slippery rocks
The rocks of the groyne can be slippery with marine growth. Care is needed when entering and exiting the water.
Low risk: Boat traffic
Small boat traffic in Mangles Bay may be present near the groyne, particularly on weekends.
Low risk: Variable visibility
Visibility can drop significantly on the southern side of the groyne and after windy weather.
Wildlife Guide
No wildlife notes for this spot yet.
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Getting in
Shore entry
Entry
Located at Chelydra Park on Mangles Bay in Rockingham, approximately 45 minutes south of Perth CBD. Access the groyne from the park's shoreline along the bay.
Parking & facilities
Car parking available at Chelydra Park
parkingtoiletspicnic_tables
Free
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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