The European green crab (Carcinus maenas) has spread far beyond its native continent, to waters off North and South America, Asia and Australia. It's a voracious eater and poses a nuisance to shellfish farmers. Invasive species have various means of reaching new habitats. Read about the role ships play in spreading invasive species.
photo
European Green Crab (Carcinus maenas)
![A photo of a solitary European green crab on a sandy substrate.](/sites/default/files/styles/3_2_large/public/2023-11/GreenCrab_37944_strandkrab.jpg.webp?itok=lhFMBrvJ)