| Taxonomic Group | Name | Year | Invasion Status | Population Status | |
|---|---|---|---|---|---|
| Bryozoans | Bugula neritina | 2003 | Definite | Estab | |
| Crustaceans-Crabs | Carcinus maenas | 1995 | Definite | Estab | |
| Algae | Codium fragile ssp. Fragile | 2003 | Definite | Estab | |
| Protozoans | Haplosporidium nelsoni* | 2003 | Definite | Estab | |
| Crustaceans-Crabs | Hemigrapsus sanguineus | 2003 | Definite | Estab | |
| Crustaceans-Isopods | Ianiropsis serricaudis | 2012 | Definite | Estab | |
| Crustaceans-Isopods | Ligia exotica | 2007 | Definite | Estab | |
| Mollusks-Gastropods | Littorina littorea | 1959 | Definite | Estab | |
| Arthropoda-Insects | Sclerocona acutella* | 2000 | Definite | Estab |