Green Island Jetty (under-jetty snorkel)

Moderate risk: Stinger Season (Jellyfish)

Stinging jellyfish (including box jellyfish and Irukandji) are present in tropical QLD waters, typically November to May.

Moderate risk: Marine stingers (jellyfish)

Stinger jellyfish (box jellyfish and Irukandji) are present in these waters from November to April. A full-length stinger suit or wetsuit is essential during this period.

Moderate risk: Box jellyfish (stinger season)

Box jellyfish (Chironex fleckeri) may be present in warm coastal waters, typically November to May. Stinger suits are recommended during this period.

Moderate risk: Irukandji jellyfish

Marine stingers including Irukandji jellyfish are present in tropical Queensland waters during the warmer months.

Moderate risk: Stinging jellyfish (marine stingers)

Stinging jellyfish (box jellyfish and Irukandji) may be present in the water, particularly during the warmer months from November to May.

Low risk: Tidal Currents

Outgoing currents between the cay and the reef edge can be strong, especially during falling tides.

Low risk: Sharp Coral

Sharp coral formations and reef cuts are present just off the beach; wearing reef shoes is recommended.

Low risk: Sun Exposure

High sun exposure with reflected UV off the water surface; dehydration and sunburn risk.

Low risk: Boat traffic around jetty

Ferries, tour boats, and water taxis regularly approach and depart from the jetty. Operators are aware of the snorkel zone, but swimmers must stay alert and keep clear of vessel traffic.

Low risk: Reduced visibility in wet season

Visibility can decrease significantly on low tide or after rain/runoff, especially during the wet season (December–March).

Low risk: Outgoing tide current

Strong tidal currents can develop around the jetty piles, particularly during outgoing tides. Snorkel on incoming or high tide for best conditions.

Low risk: Tidal currents

Green Island lies on the inner reef where tidal currents can sweep around the cay, especially near the jetty and at changing tides. Snorkelers should be aware of outgoing tides.

Low risk: Boat traffic

Boat traffic around the island, particularly near the jetty and ferry docking area, requires vigilance from snorkelers.

Low risk: Boat traffic near jetty

The jetty area and northern tip can have boat traffic, including ferries and water taxis. Stay within marked swimming areas.

Low risk: Sun exposure

Tropical sun is intense year-round. Reflection off the white sand and water increases UV exposure significantly.

Low risk: Sharp encrustations on jetty pilings

The jetty's steel and concrete pylons are encrusted with sharp coral and barnacles; contact can cause cuts.