Sir Joseph Banks Group Marine Park lies off the coast of Tumby Bay in lower Spencer Gulf, protecting a chain of low-lying limestone-capped islands surrounded by shallow reefs, seagrass meadows, saltmarsh, and uncommon popcorn coral. With over 70 species of fish, the clear, sheltered waters offer outstanding snorkeling around rocky island edges and sandy bays. The park is also a haven for Australian sea lions, dolphins, and diverse seabirds. Best accessed by boat from Tumby Bay, the islands provide a wild, remote snorkeling experience set against the dramatic coastal landscape of the Eyre Peninsula.
Sir Joseph Banks Group Marine Park (Tumby Bay area)
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Showing last known conditions
Wave Height 0.3 mSwell Period 11 sWind Speed 9.4 knPrecipitation 13 mmTidal Phase slack
Last evaluated
DANGER: Explicit Risks Present
Sir Joseph Banks Group Marine Park (Tumby Bay area) has hazards marked as danger. Entering the water here means you may face serious risks to your personal safety.
- Remote location danger
Limited emergency services and long distance from shore (12 nautical miles from Tumby Bay) mean any incident requires significant response time.
The spot
Community-maintained
Community contribution: submitted by Daniel
Know before you go
Logged by the community, confirmed by mods
High risk: Remote location
Limited emergency services and long distance from shore (12 nautical miles from Tumby Bay) mean any incident requires significant response time.
Moderate risk: Boat traffic in channels
The park is a popular fishing and charter destination; boat traffic in the narrow channels between islands can be hazardous for snorkelers.
Moderate risk: Strong tidal currents
Tidal flows through Spencer Gulf and between the islands can create strong, unpredictable currents, especially around reef edges.
Low risk: Variable weather and swell
Southern Ocean swells and sudden weather changes can create rough conditions in exposed areas around the islands.
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Getting in
Boat
Entry
Access to Sir Joseph Banks Group Marine Park is by private or charter boat from Tumby Bay (12 nautical miles east), Port Lincoln, Ski Beach, Second Creek, Wisemans Beach, Louth Bay, or North Shields. The islands are about 20 km southeast off the coast of Tumby Bay.
Parking & facilities
Parking available at Tumby Bay boat ramp and at various access points along the coast including Ski Beach, Louth Bay, and North Shields.
parkingboat_ramp
No entry fee for the marine park itself. Boat ramp fees may apply at some access points.
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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