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Marine Pests

Clubbed Tunicate/Leathery Sea Squirt

Scientific NameStyela clava
Present from Northland to Tauranga, Porirua, Picton, Tarakohe, Nelson, Picton, Lyttelton and Otago Harbours.
This Asian seasquirt is brown with lumpy, leathery skin. Woody stalk, generally longer than the body, with longitudinal folds.

• For more info see Marine Biosecurity Porthole
• Boaties Clean Below Good to Go info

If you think you've found a marine pest - report online here
or call our pest and disease hotline 0800 80 99 66

Impact
  • Can form dense colonies excluding other organisms 
  • Highly effective filter-feeder 
  • Preys on larvae of commercially important fisheries species
  • Displaces native and fisheries species
  • Fouls boats, aquaculture installations and other marine structures

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