# | Species | Year | Period | From - To | Reason | Established in the wild | Ref. no. |
1 | Ligia italica | 1887 | 18th century | Mediterranean - Azores | ballast water | Unknown | 003512 |
2 | Sabella spallanzanii | 1954 | 1950-1974 | Mediterranean - Faial island | biofouling | Unknown | 003512 |
3 | Sphaeroma serratum | 1991 | 1975-present | Mediterranean - Azores Island | accidental with ships | Unknown | 003512 |