Blyth Island is a tiny, uninhabited Australian sea lion sanctuary off the coast of the Eyre Peninsula, South Australia, accessible only by boat from Port Lincoln. This protected rocky island is fringed by seagrass meadows and clear temperate waters, offering an unforgettable snorkeling experience where curious and playful Australian sea lions (Neophoca cinerea) swirl, dive, and mimic your every move. The island's isolation and sanctuary status keep the wildlife interactions intimate and extraordinary — often described as "falling in love" rather than just snorkeling.
Blyth Island
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Wave Height 0.2 mSwell Period 11 sWind Speed 2.7 knPrecipitation 16 mmTidal Phase slack
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Community contribution: submitted by Daniel
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Moderate risk: Currents and Tidal Flow
Tidal currents around the island can be strong, especially during outgoing tides. Snorkelers can be led out to sea if not attentive.
Moderate risk: Remote Location
Blyth Island is a 90-minute boat ride from Port Lincoln with no facilities, no phone reception, and no immediate emergency services on site.
Low risk: Cold Water Temperature
Temperate South Australian waters are cold year-round; a thick wetsuit (7mm recommended) is essential for comfort and safety.
Low risk: Sea Lion Behavior
Sea lions are wild animals; they may lead swimmers out to deeper water. Follow guide instructions — do not chase them.
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Getting in
Snorkel tour
Entry
Blyth Island is located ~90 minutes by boat from Port Lincoln on South Australia's Eyre Peninsula. All snorkeling visits are via licensed tour operators departing from Port Lincoln Marina (Adventure Bay Charters or Calypso Star Charters). Fly from Adelaide to Port Lincoln via Regional Express (REX), or drive 650 km west from Adelaide.
Parking & facilities
Parking available at Port Lincoln Marina for private vehicles if driving to town.
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Tour prices vary; sea lion swim experiences typically range from $205–$265 per adult for a ~5-hour excursion (includes wetsuit, snorkel gear, hot shower, and refreshments).
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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