Hamelin Pool in Shark Bay World Heritage Area is home to the world's most diverse and abundant stromatolites — 'living fossils' that represent life on Earth from 3.5 billion years ago. This shallow, hyper-saline marine basin allows you to snorkel alongside ancient microbial mats that built the earliest reefs. Access is by guided private tour (Shark Bay Eco Tours) that 4WDs to a restricted site. The crystal-clear, calm water over the carbonate platform offers a surreal window into primordial Earth. Viewing from the boardwalk (currently damaged by Cyclone Seroja) is also possible from shore with binoculars at low tide.
Stromatolite Snorkel Site (Hamelin Pool)
IntermediateMAYBE
MAYBE
Fair. Experienced snorkellers only.
Showing last known conditions
Wave Height 0.0 mSwell Period 0.0 sWind Speed 4.0 knPrecipitation 0.4 mmTidal Phase unknown
Last evaluated
DANGER: Explicit Risks Present
Stromatolite Snorkel Site (Hamelin Pool) has hazards marked as danger. Entering the water here means you may face serious risks to your personal safety.
- Microbial mat sensitivity danger
The living stromatolite mats are extremely fragile — walking on them causes irreversible damage. Snorkellers must not touch, stand on, or disturb the formations.
The spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
Logged by the community, confirmed by mods
High risk: Microbial mat sensitivity
The living stromatolite mats are extremely fragile — walking on them causes irreversible damage. Snorkellers must not touch, stand on, or disturb the formations.
Moderate risk: Tidal exposure and timing
Stromatolites are best viewed/snorkelled at very low tide; incoming tide changes water depth rapidly.
Moderate risk: Restricted access
Snorkelling at the stromatolite sites is only permitted via authorised guided tours (Shark Bay Eco Tours) due to conservation restrictions.
Low risk: Remote location
Hamelin Pool is in a very remote area of Western Australia with limited mobile reception, no nearby medical facilities, and extreme summer heat.
Low risk: Cyclone season
The 200 m viewing boardwalk was damaged by Cyclone Seroja (2021) and remains closed. Cyclones can impact access from November to April.
Wildlife Guide
No wildlife notes for this spot yet.
Gallery
2 photos from the community
Getting in
Snorkel tour
Entry
Hamelin Pool is accessed from Shark Bay Road, 27 km off the North West Coastal Highway (approx. 1 hr 30 min drive from Denham, 1 hr 45 min from Monkey Mia). The road is sealed apart from a short unsealed 2WD-accessible section to the carpark. From the carpark it's an easy 750 m return walk to the stromatolite viewing area. Snorkelling requires a guided tour (Shark Bay Eco Tours) that 4WDs to a restricted site.
Parking & facilities
Gravel carpark at the end of the access road near the Hamelin Pool Telegraph Station. Suitable for standard 2WD vehicles.
toiletsparking
Free self-guided land viewing. Snorkel tour: $1,450 AUD for up to 5 people.
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Gallery ┬╖ 2 photos
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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