Mettam's Pool is a sheltered natural limestone reef pool within Marmion Marine Park on Perth's northern coastline, just north of Trigg Beach. The limestone reef creates a calm, shallow lagoon (1–6 m deep) protected from the open ocean swell, making it one of Perth's most popular and family-friendly snorkeling destinations. Snorkelers explore a maze of limestone gutters, troughs, and small caves teeming with marine life. The pool stretches roughly 600 m along the shore and offers crystal-clear waters on calm summer days, with easy shore access via stairs from West Coast Drive.
Mettam's Pool
Fair. Experienced snorkellers only.
Showing last known conditions
Last evaluated
© Pete MartinThe spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
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Low risk: Surge and swell
Onshore swell and waves breaking over the reef can create surge and reduced visibility, especially when westerly winds pick up after midday.
Low risk: Tidal currents
Tidal currents can develop, particularly around the change of tide, making it harder for inexperienced swimmers.
Low risk: Shallow reef and rocky entry
The limestone reef shelf is very shallow at low tide and the entry beach has scattered rocks. Care needed when entering and exiting.
Low risk: Reef surge and swell
Surge and breaking waves can push snorkellers onto the shallow reef when conditions are rough, especially in afternoon sea breezes.
Low risk: Unpatrolled beach
No lifeguards patrol this beach; snorkellers must assess conditions themselves.
Low risk: Swell surge on outer reef edge
When swell is above 1.5 m, surge can push snorkelers into sharp limestone on the outer reef edge. Best on calm days.
Low risk: Sharp limestone reef
The limestone platform is very sharp and can cause cuts if you stand or slip. Wear reef shoes or booties.
Low risk: Strong afternoon sea breeze
Afternoon south-westerly winds can pick up, creating choppy surface conditions inside the pool and making exit tricky.
Low risk: Low tide exposure
At very low tides the pool becomes very shallow (under 1 m), reducing snorkeling space and increasing risk of scraping against reef.
Wildlife Guide
No wildlife notes for this spot yet.
Gallery
1 photo from the community
Getting in
From West Coast Highway, take Karrinup Road west to the coast. Turn right onto West Coast Drive. Look for black Mettam's Pool signs on the left. Park at the car park north of the reef, then follow the footpath to the stairs down to the beach.
Free car park available on West Coast Drive, north of the reef. Street parking also available along West Coast Drive.
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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.