A pristine 30-hectare marine sanctuary in Williamstown, just 20 minutes from Melbourne's CBD, offering a remarkable diversity of habitats within a compact area. The western side features saltmarsh and Victoria's only mangroves growing on a basalt coast, while the eastern side has weathered basalt rockpools, submerged boulders, and ledges. Sandy beaches separate the clay and rocky shores. Snorkelers can explore shallow reefs less than 4m deep, gliding over seagrass beds, colourful sponges, and coralline algae gardens, with several heritage-listed shipwrecks visible to divers offshore.
Jawbone Marine Sanctuary
BeginnerMAYBE
MAYBE
Fair. Experienced snorkellers only.
Showing last known conditions
Wave Height 0.1 mSwell Period 5.5 sWind Speed 8.2 knPrecipitation 45 mmTidal Phase flood
Last evaluated
The spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
Logged by the community, confirmed by mods
Moderate risk: Blue-ringed octopus
Cryptic blue-ringed octopus inhabit rockpool crevices; can deliver a life-threatening bite if disturbed.
Moderate risk: Resident snakes
Tiger snakes may be encountered in the saltmarsh and grassy areas near the sanctuary.
Low risk: Slippery uneven rocks
Weathered basalt rockpools and ledges can be very slippery when traversing the intertidal zone.
Low risk: Storm and high tide surges
Conditions can change rapidly; the area is vulnerable to storm surges and high tides that can damage pathways.
Low risk: Slippery or unstable pathways
Gravel pathways and boardwalk can wash out after storm events, creating uneven and hazardous surfaces.
Wildlife Guide
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Getting in
Shore entry
Entry
Located 20 minutes from Melbourne's CBD in Williamstown. From the city, take the West Gate Freeway (M1) to Williamstown exit, follow Kororoit Creek Road and then Melbourne Road to Bayview Street. The sanctuary entrance is at the end of Bayview Street, Williamstown, VIC 3016.
Parking & facilities
Car park available at the end of Bayview Street, Williamstown. Additional parking can be found at nearby Gloucester Reserve for small vessel launching.
parkingpicnic_tablestoilets
Free entry. No fees required.
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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