Great Glennie Island

Moderate risk: Remote Location

Great Glennie Island is remote with no facilities. Emergency evacuation is extremely difficult — self-sufficiency and safety gear are essential.

Moderate risk: Exposed Swell Conditions

Wilsons Promontory's west coast receives significant Southern Ocean swell, creating strong surge around the island's granite shores.

Moderate risk: Remote offshore location

Dannevig Island is a remote island accessible only by boat — no emergency services or facilities on-site.

Moderate risk: Strong ocean currents

Open ocean currents around the Glennie group can be strong and unpredictable, especially around the granite reefs.

Low risk: Strong Tidal Currents

Tidal flows between the Glennie group islands can produce strong currents. Snorkel at slack tide and consult local tide charts.

Low risk: Cold Water Temperature

Water temperatures in this Bass Strait region are cold year-round (10-16°C), requiring a thick wetsuit for comfortable snorkeling.

Low risk: Boat Access Only

The island is offshore and accessible only by private boat or organised charter. No ferry service operates here.

Low risk: Cold water temperatures

Southern Ocean waters off Wilsons Promontory are cold year-round, requiring a wetsuit (5mm+ recommended).

Low risk: Exposed granite reef

Sharp, rugged granite boulders and reef formations pose cutting and entanglement hazards.

Low risk: Boat traffic

Access is by boat only; snorkelers must remain vigilant for approaching vessels in the transit channel.

Low risk: Swell and surge

Exposed granite shoreline subject to ocean swell and surge, increasing risk of being pushed against rocks.