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South Australia · Island

Pearson Island

Granite blocks dropping beyond 30 m in exceptionally clear water at one of SA's most remote islands, with harlequin fish, wobbegongs and seals.

Eyre PeninsulaBoat (multi-day/liveaboard)
YouDive mascot illustration; not a photograph or site map

Mascot illustration — not a photograph or site map.

Depth
5–30 m
Certification
Deep/Advanced + experience
Access
Boat (multi-day/liveaboard)
Dive type
Island
Region
Eyre Peninsula

Depth describes the recorded site range, not a recommended dive depth. Certification is a recorded recommendation; suitability depends on your planned route, training, experience and current conditions.

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Location & map

Approximate area

Area reference only. The exact dive location has not been confirmed. This map is for orientation, not marine navigation or an entry-point recommendation.

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Meet the site

Pearson Island, one of the Investigator Group off the west coast of Eyre Peninsula, is among the most remote dive sites in South Australia. The Marine Life Society describes a 213-hectare island split into northern and southern land masses by a shallow tidal channel, with an automatic light at its centre and a safe anchorage and landing point in a cove on the eastern side. It is noted for clear water. Underwater, large granite blocks go out to depths of more than 30 m. The boulders shelter gorgonia, soft corals, zebrafish, wrasse, moonlighters, nannygai, wobbegongs and harlequin fish, and seals are regularly seen. About 50 Australian fur seals breed on a sheltered beach and should not be disturbed. The island is also famous among biologists for its isolated populations of rock-wallabies and other wildlife that have evolved in isolation. Pearson Island is an expedition destination: far offshore, exposed to the Bight, and accessible only with a large, well-equipped boat and a multi-day weather window. It is protected as a conservation park, and landing requires authorisation. For the few who reach it, the combination of clear oceanic water, towering granite and unfished marine life is exceptional. It suits highly experienced divers with expedition-level planning and safety equipment. Any trip should include oxygen, a satellite communication device and a conservative dive plan, since evacuation would require an aeromedical retrieval from the mainland.

Some details in this record need confirmation. Check the source information and speak with a local operator.

What you might see

Gorgonia, soft corals, zebrafish, wrasse, moonlighters, nannygai, wobbegong sharks, harlequin fish, western blue groper, fur seals, sea lions

Location

213-hectare granite island in the Investigator Group off Elliston, split by a shallow tidal channel, with large granite blocks dropping beyond 30 m, clear water and a small fur seal breeding colony.

Facilities nearby

None.

Before you make plans

Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.

Sources & further reading

marinelife.org.au

Record updated 26 Sept 2026. Source claims are being reviewed.