European green shore crab (Carcinus maenas)

What to look for

  • 5 spines on each side of eyes.
  • Last pair of legs sharp & slightly flattened at tips.
  • No swimming paddles.
  • Shell surface smooth.
  • Smooth green/brown shell with pale orange underside.
  • Shell up to 7 cm wide.


  • Prefers bays/estuaries but found on all types of shores up to 60m depth.
  • Tolerates temperatures up to 30 C.


  • Aggressive predator, out-competes natives for food & habitat.

Current locations 

  • NSW
  • Victoria
  • Tasmania
  • SA

What you can do

  • Inspect & clean niche areas & antifoul your vessel regularly.
  • Clean & dry equipment before transporting & using in a different location. 

More Information

More information on this pest can be found on the National Introduced Marine Pest Information System

Report a sighting

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