The Basin is the quintessential Rottnest Island swimming and snorkeling spot — a sheltered, turquoise natural bay on the island's north side. Its calm, protected waters make it perfect for beginners and families, while the rocky reef edges just offshore reveal a lively underwater world teeming with colorful fish. When the afternoon "Freo Doctor" sea breeze kicks up elsewhere, The Basin stays glassy and inviting. The shallow sandy entry leads to seagrass beds and limestone reef patches where you can spot schools of baitfish, western king wrasse, and the occasional octopus. It's one of Western Australia's most iconic easy-access snorkel destinations.
The Basin Beach
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Wave Height 0.4 mSwell Period 12 sWind Speed 0.6 knPrecipitation 0.8 mmTidal Phase ebb
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© Matthew.cromptonThe spot
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Community contribution: submitted by Daniel
Know before you go
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Low risk: Ferry and boat traffic near shore
Ferries and tour boats operate near the beach entrance; swimmers should be visible and mindful of approaching vessels.
Low risk: Stinger jellyfish (summer)
Warmer months (Nov–Mar) can bring small stingers into the shallows; wearing a stinger suit is recommended.
Low risk: Sandbar drop-offs
Uneven sandbars create sudden depth changes that can surprise waders and weak swimmers.
Low risk: Boat traffic (summer peak)
The Basin can get busy with ferries, water taxis, and recreational boats during summer, especially on weekends. Stay within the marked swimming area.
Low risk: Stinging jellyfish
Box jellyfish and bluebottles can appear in warmer months and with onshore winds. Stings are painful but rarely dangerous here.
Low risk: Sharp reef limestone
The rocky reef edges have sharp limestone outcrops. Wear reef shoes or booties when entering near the rocks.
Low risk: Boat traffic
Ferries and private vessels transit near the entrance to The Basin. Stay within the marked swimming area.
Low risk: Stinger jellyfish
Box jellyfish and other stingers may be present in warmer months (Nov–Mar). Wear a stinger suit if conditions warrant.
Wildlife Guide
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Gallery
3 photos from the community
Getting in
Shore entry
Entry
The Basin is on the northern side of Rottnest Island, about a 10-minute walk from the Thomson Bay ferry jetty (Rottnest Island Settlement). Head northwest past the shops and the main settlement, following the coastal path. Bicycles (rented on the island) are the preferred mode of transport. Regular ferries operate from Fremantle (Perth) and Hillarys Boat Harbour to Rottnest Island.
Parking & facilities
No private vehicle access on Rottnest Island. Bicycle racks are available near the beach. Ferry passengers walk or cycle from the jetty.
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Rottnest Island entry fee applies (approx. AUD $15-20 per adult, varies by season). Ferry fares are separate, typically AUD $50-80 return from Fremantle.
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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