Haystack Island Reef is a spectacular offshore wall dive and snorkel site roughly 500 metres off the shore of Haystack Island on South Australia's Yorke Peninsula. A massive granite reef wall runs parallel to the island for over a kilometre, rising from a sandy bottom at 22 metres up to about 10 metres in places. The terrain is riddled with caves, swim-throughs, chasms and gorges, while the walls are draped in vibrant red, yellow and orange soft corals and sponges. This remote, open-water site rewards adventurous snorkelers with abundant fish life and crayfish in crystal-clear conditions.
Haystack Island Reef
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Wave Height 0.3 mSwell Period 10 sWind Speed 1.8 knPrecipitation 10 mmTidal Phase ebb
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DANGER: Explicit Risks Present
Haystack Island Reef has hazards marked as danger. Entering the water here means you may face serious risks to your personal safety.
- Open ocean swell danger
Exposed offshore location with potential for strong surge and large swells, especially in southerly winds.
- Open ocean swell / surge danger
The site is exposed to open ocean swell and can be dangerous in moderate to rough conditions. Only attempt on calm days with minimal swell.
The spot
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Community contribution: submitted by Daniel
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High risk: Open ocean swell
Exposed offshore location with potential for strong surge and large swells, especially in southerly winds.
High risk: Open ocean swell / surge
The site is exposed to open ocean swell and can be dangerous in moderate to rough conditions. Only attempt on calm days with minimal swell.
Moderate risk: Strong currents
Tidal currents can be strong around the reef wall and island channels.
Moderate risk: Tidal currents
Strong tidal currents can sweep along the reef wall, particularly during tidal changes.
Moderate risk: Depth and overhead cave environments
Water depth drops to 22 m at the sand line; depth and potential for disorientation in caves requires strong buoyancy control.
Low risk: Boat traffic
Access is by boat only; vessel traffic in the area poses a collision hazard for snorkelers.
Low risk: Cold water temperatures
South Australian waters can be cold year-round, increasing risk of hypothermia on extended snorkels.
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Getting in
Boat
Entry
Haystack Island lies off the western coast of Yorke Peninsula, South Australia, west of Marion Bay and Innes National Park. The reef is located approximately 500 metres offshore, parallel to the island. Access is by private boat launched from the Marion Bay boat ramp or via charter from Adelaide-based dive operators. The island itself is uninhabited and there are no ferry services.
Parking & facilities
Parking available at Marion Bay boat ramp (Innes National Park entry fee applies).
parkingboat_ramp
Innes National Park entry fee required for access via Marion Bay.
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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