London Bridge is a striking limestone rock arch carved into the coastline of Mornington Peninsula National Park, just steps from Portsea Surf Beach. At low tide, vast turquoise rockpools emerge around and beneath the arch, creating a natural aquarium perfect for snorkeling. The relatively sheltered, shallow pools are rich with hidden crevices teeming with marine life, including colourful reef fish, crabs, and the occasional visit from Australian fur seals. This unique spot offers a safe, family-friendly snorkeling experience against a dramatic coastal backdrop — the best-known snorkeling nook on the Mornington Peninsula.
London Bridge
Poor conditions. Stay out today.
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© Stephen BainThe spot
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Community contribution: submitted by Daniel
Know before you go
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Moderate risk: Ocean swell and surge
Southern Ocean swells can produce strong and unpredictable surge conditions around the arch and reef, particularly during winter storms.
Moderate risk: Rough surf and strong swells
Bass Strait produces powerful waves and rips, especially on windy days. The ocean beach is exposed and can be treacherous for swimming.
Moderate risk: Unstable cliff edges
The clifftop near the lookout has unstable edges due to erosion. Do not jump the safety fence.
Low risk: Tide-dependent access
The rockpools are most accessible and safest at low tide. At high tide the water deepens and waves break over the reef, making entry more challenging.
Low risk: Slippery rocks
Rocks around the arch and pools can be extremely slippery, especially when wet.
Low risk: Steep access path
The rockpools are only accessible via a steep path and stairs from the lookout. Not wheelchair accessible.
Low risk: Sharp and slippery rocks
The rocks around the arch and rockpools can be wet, sharp, and uneven. Sturdy water shoes are recommended.
Low risk: Changing tide conditions
Best explored at low tide when rockpools are accessible. Incoming tide can cut off access around the arch.
Wildlife Guide
No wildlife notes for this spot yet.
Gallery
3 photos from the community
Getting in
From Portsea, take Point Nepean Road to London Bridge Road and follow it to the end. A short walking track from the car park leads down to Portsea Surf Beach and the rockpools of London Bridge.
Small car park at the end of London Bridge Road, Portsea.
Free entry (within Mornington Peninsula National Park).
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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.