<P> C. maenas is a widespread invasive species , listed among the 100 `` world 's worst alien invasive species '' . It is native to the north - east Atlantic Ocean and Baltic Sea , but has colonised similar habitats in Australia , South Africa , South America and both Atlantic and Pacific coasts of North America . It grows to a carapace width of 90 millimetres ( 3.5 in ) , and feeds on a variety of molluscs , worms and small crustaceans , potentially impacting a number of fisheries . Its successful dispersion has occurred via a variety of mechanisms , such as on ships ' hulls , sea planes , packing materials , and bivalves moved for aquaculture . </P>
<P> C. maenas is a widespread invasive species , listed among the 100 `` world 's worst alien invasive species '' . It is native to the north - east Atlantic Ocean and Baltic Sea , but has colonised similar habitats in Australia , South Africa , South America and both Atlantic and Pacific coasts of North America . It grows to a carapace width of 90 millimetres ( 3.5 in ) , and feeds on a variety of molluscs , worms and small crustaceans , potentially impacting a number of fisheries . Its successful dispersion has occurred via a variety of mechanisms , such as on ships ' hulls , sea planes , packing materials , and bivalves moved for aquaculture . </P>
where is the european green crab native to
where is the european green crab native to
north - east Atlantic Ocean and Baltic Sea
north - east Atlantic Ocean and Baltic Sea