| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Tunicates | Botryllus schlosseri | 1994 | Definite | Established | None |
| Bryozoans | Bugula neritina | 1997 | Definite | Established | None |
| Tunicates | Ciona robusta | 2007 | Definite | Established | Hull Fouling |
| Tunicates | Didemnum vexillum | 1997 | Definite | Established | None |
| Algae | Grateloupia turuturu | 2010 | Definite | Established | Hull Fouling |
| Crustaceans-Amphipods | Jassa marmorata | 1990 | Definite | Established | Discarded Bait |
| Mollusks-Bivalves | Mytilus galloprovincialis | 1995 | Definite | Established | Natural Dispersal |
| Algae | Undaria pinnatifida | 2009 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Bryozoans | Watersipora subatra* | 1995 | Definite | Established | Habitat Restoration, Oyster Accidental |