The slipper limpet has a smooth oval shaped shell up to 5cm long. It tolerates a range of environments and habitats, and can be found from muddy to rocky intertidal areas of estuaries and coastal bays.
The slipper limpets create dense stacks, sitting on top of one another competing with native bivalve species for space and food. It has high survival and settlement rates that can impact native bivalve settlement and oyster aquaculture industries.
Slipper limpet / Crepidula fornicata
Similar native species
Northern slipper limpet / Spiny slipper limpet
On the 1st July the NSW Government implemented a new Biosecurity Act 2015 (the Act). Under Schedule 2 of this Act the Slipper Limpet is declared as prohibited matter in NSW. This means it is illegal to possess, buy, sell or move this pest in NSW. Heavy penalties apply for non-compliance. In addition, NSW DPI has the power to seize and require the destruction of the pest.
People are expected to have a basic level of knowledge about the biosecurity risks they might encounter in their normal work and recreational activities. All community members have a general biosecurity duty to consider how actions, or in some cases lack of action could have a negative impact on another person, business enterprise, animal or the environment. We must then take all reasonable and practical measures to prevent or minimise the potential impact.
Learn to recognise, and be aware of, the slipper limpet so that you can report any suspected new sighting.
If you see this pest in NSW, please report it immediately