Key characters: white tubercules, globular reddish test, spines have violet tips
Habitat: Rocky bottom from the intertidal to 40 m
Lifestyle: Grazing on larger algae, preference for Laminaria and macroalgea covered in bryozoans
Tydelig rettlinjet rad med pigger langs midten av hver arm. Madrepoden er alltid hvit. Stor utbredelse
It's not the same specie.
Invasive crustecean species in coastal waters in Denmark , caught in a fyke net