| Taxonomic Group | Name | Year | Invasion Status | Population Status | |
|---|---|---|---|---|---|
| Tunicates | Botrylloides violaceus | 2005 | Definite | Estab | |
| Tunicates | Botryllus schlosseri | 2012 | Definite | Estab | |
| Crustaceans-Crabs | Carcinus maenas | 2017 | Definite | Estab | |
| Bryozoans | Cryptosula pallasiana | 1972 | Definite | Estab | |
| Crustaceans-Amphipods | Grandidierella japonica | 1999 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium acherusicum | 1999 | Definite | Estab | |
| Mollusks-Bivalves | Mya arenaria | 1999 | Definite | Estab | |
| Crustaceans-Cumaceans | Nippoleucon hinumensis | 1999 | Definite | Estab | |
| Mollusks-Bivalves | Nuttallia obscurata | 1993 | Definite | Estab | |
| Algae | Sargassum muticum | 1950 | Definite | Estab |