Field marks
Five arms with upturned tips; upper surface densely spined; mottled yellow and purple
- Size
- Arm length over 10 cm
- Habitat
- Intertidal to shallow subtidal
- Distribution
- North Pacific coasts; invasive in Australia
- Diet
- Preys on bivalves
- Counted in
- individuals
- Notes
- A pest of scallop and mussel farms
References
Profile compiled from common references; awaiting expert review.
Observations