Henrietta Rocks

Moderate risk: Stinging Jellyfish

Box jellyfish and bluebottles can occasionally be present during warmer months in nearshore waters.

Moderate risk: Strong offshore winds

Southerly sea breezes can pick up quickly in the afternoon, making conditions choppy and creating a risk of being blown offshore.

Low risk: Swell and Surge

Southern and western beaches (e.g., Strickland Bay) can experience strong swell and wave surge, especially in winter months.

Low risk: Strong Winds

Afternoon sea breezes (the 'Fremantle Doctor') can pick up suddenly, creating choppy surface conditions and making swimming back to shore tiring.

Low risk: Boat Traffic

Ferries, charter vessels, and private boats operate year-round in the main channels near Thomson Bay and the jetty area.

Low risk: Sharp limestone reef

The limestone reef formations have sharp edges; cuts and scrapes are common without reef shoes or fins.

Low risk: Sharp limestone reef edges

The reef surrounding the wreck has sharp limestone edges that can cut exposed skin. Wear reef shoes or fins.

Low risk: Boat traffic near wreck

The wreck site is occasionally visited by small boats and kayaks. Stay aware of your surroundings.

Low risk: Changing tide conditions

Water clarity and current can shift with the tide. Check conditions before entering and avoid strong outgoing tides.

Low risk: Sharp reef limestone

The limestone reef edge has sharp, jagged edges that can cause cuts and scrapes. Wear reef shoes or fins.

Low risk: Sharp wreckage

Exposed metal and broken sections of the Shark shipwreck can cause cuts if touched.

Low risk: Boat traffic

The spot is offshore near a navigation channel; occasional boat traffic nearby.

Low risk: Marine stingers (summer)

Warmer summer waters may bring box jellyfish and other marine stingers.