| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Crustaceans-Barnacles | Amphibalanus improvisus | 1994 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Crustaceans-Cladocerans | Cercopagis pengoi* | 2008 | Non-native | Established | Ballast Water, Natural Dispersal |
| Cnidarians-Hydrozoans | Cordylophora caspia | 1986 | Non-native | Established | Hull Fouling |
| Mollusks-Gastropods | Potamopyrgus antipodarum | 1945 | Non-native | Established | Cargo, Dry Ballast, Natural Dispersal, Packing Material |