Neptune Islands Conservation Park

Neptune Islands Conservation Park — The Neptune Islands are a small group of granite islands in the outer Spencer Gulf and form the world's premier location for cage diving…

Natural Landmark in South Australia

Natural Landmark National

Written by Ben Cole· Updated 23 Apr 2026

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About Neptune Islands Conservation Park

The Neptune Islands are a small group of granite islands in the outer Spencer Gulf and form the world's premier location for cage diving with great white sharks. The islands support the largest aggregation of great white sharks in Australian waters (typically autumn–winter) and are also home to large New Zealand fur seal colonies that attract the sharks. Access is strictly controlled and only permitted via licensed tour operators from Port Lincoln.

About

Warnings

Cage Diving Is Subject To Shark Behaviour — Sightings Not Guaranteed On Any Given DaySeasickness Is Possible On The 2–3 Hour Boat Journey (Open Ocean)Book Months In Advance — Very Popular With Limited SpacesThis Is A Remote Marine Park — Operators Must Be Licensed

Getting There

Map of Neptune Islands Conservation Park

Port Lincoln is 650km west of Adelaide by road, or fly via Rex Airlines (1 hr from Adelaide). All tours depart Port Lincoln wharf.

Nearest airport

Visitor Tips

•Rodney Fox Shark Expeditions is the original and most reputable operator. Consider the liveaboard overnight trips for multiple dive opportunities. Dramamine recommended if prone to seasickness.

At a Glance

The Place

Significance: National

Plan Your Visit

Entry: Paid
Duration: Full day (boat trip departs Port Lincoln)
Best Time: March–October (peak shark season; winter best for reliable sightings)
Hours: Boat-based access only. Tour operators run seasonal trips.

Location

Area: Lincoln National Park
Region: Flinders Ranges
State: South Australia

Highlights

Great White Shark Encounters (One Of World'S Best Locations)New Zealand Fur Seal Colony (Thousands Of Individuals)Remote Island SceneryRodney Fox Shark Expeditions (Pioneering Operator)