| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Algae | Fucus spiralis | 1975 | Definite | Established | None |
| Crustaceans-Amphipods | Grandidierella japonica | 2002 | Definite | Established | Hull Fouling, Natural Dispersal, Oyster Accidental |
| Annelids-Polychaetes | Hobsonia florida | 1979 | Definite | Established | Hull Fouling, Oyster Accidental |
| Mollusks-Bivalves | Mya arenaria | 1954 | Definite | Established | Fisheries Intentional |
| Mollusks-Gastropods | Potamopyrgus antipodarum | 2003 | Definite | Established | Fisheries Accidental (not Oyster) |