Kwinana Grain Terminal

Moderate risk: Boat traffic

The grain terminal is an active commercial facility with ship movements; snorkellers must stay clear of vessel channels.

Moderate risk: Parallel shore current

A strong current can run parallel to the shore, making navigation tricky when combined with the magnetic interference from the jetty structure.

Moderate risk: Tidal currents

Strong tidal flows can develop around the jetty pylons, especially during spring tides, making it difficult to maintain position.

Low risk: Fishing activity

The jetty is an active industrial grain terminal used by fishing vessels; watch for fishing lines, hooks, and boat traffic around the jetty.

Low risk: Reduced visibility

Milky or stirred-up sediment can significantly reduce underwater visibility, especially when sea breezes pick up in the afternoon.

Low risk: Barnacle-encrusted pylons

The jetty's wooden and concrete pylons are covered in sharp barnacles and marine growth that can cause cuts and abrasions.

Low risk: Compass interference from jetty

The long jetty interferes with compass readings, requiring careful navigation.

Low risk: Variable visibility

Visibility can be reduced, especially after weather events; reported as low as 4 m.

Low risk: Long surface swim

A long surface swim (~200 m) from shore to the jetty is required, which can be tiring in current or swell.