| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Sponges | Chalinula loosanoffi* | 1970 | Definite | Established | Hull Fouling, Oyster Accidental |
| Tunicates | Diplosoma listerianum | 1947 | Definite | Established | Hull Fouling |
| Annelids-Polychaetes | Ficopomatus enigmaticus | 2001 | Definite | Established | Hull Fouling |
| Crustaceans-Amphipods | Jassa marmorata | 1990 | Definite | Established | Ballast Water, Hull Fouling |
| Crustaceans-Crayfish | Pacifastacus leniusculus | 1959 | Definite | Established | Fisheries Accidental (not Oyster) |
| Algae | Sargassum muticum | 1977 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Algae | Undaria pinnatifida | 2014 | Definite | Established | Hull Fouling, Natural Dispersal |
| Bryozoans | Watersipora subatra* | 2015 | Definite | Established | Hull Fouling |