Wild Shellfish – Mercury Passage and Spring Bay

Wild Shellfish – Mercury Passage and Spring Bay

  • Danger: Do not eat wild shellfish from the Mercury Passage (the area between Maria Island and mainland Tasmania) and Spring Bay Regions in South Eastern Tasmania

This warning was issued on the 4th October 2019 and remains current.

Toxic algal blooms (also known as harmful algal blooms or HABs) are present in the Mercury Passage and Spring Bay region of Tasmania. High levels of algal toxins have been detected in shellfish from this region.

Recreationally harvested shellfish should not be eaten from this area because the algal toxins are harmful to humans.

Seek urgent medical help if you get sick after eating wild shellfish.

Symptoms can occur within minutes to hours after eating shellfish. Cooking or freezing the shellfish does not destroy the toxins that cause shellfish poisoning. Shellfish poisoning symptoms include:

  • tingling or numbness
  • weakness
  • blurred vision
  • difficulty breathing
  • vomiting
  • diarrhoea.

Seafood in shops and restaurants is safe to eat because Biosecurity Tasmania monitors the safety of commercially grown shellfish.

Wild shellfish include: oysters, mussels, clams, pipis, cockles and wedge shells.

Abalone, scallop roe and the intestines and livers (tomalley) of rock lobster can also be affected when toxic algal blooms are present.