| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Algae | Caulacanthus okamurae | 1999 | Definite | Established | Ballast Water, Hull Fouling |
| Algae | Lomentaria hakodatensis* | 2004 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Crustaceans-Isopods | Niambia capensis | 1978 | Definite | Established | Cargo, Dry Ballast |
| Mollusks-Gastropods | Philine auriformis | 1995 | Definite | Established | Ballast Water, Natural Dispersal |
| Algae | Sargassum horneri | 2009 | Definite | Established | Natural Dispersal |
| Algae | Sargassum muticum | 2004 | Definite | Established | None |
| Algae | Schizymenia dubyi* | 1972 | Definite | Established | Ballast Water, Hull Fouling |
| Tunicates | Styela clava | 1971 | Definite | Established | Hull Fouling |
| Fishes | Tridentiger trigonocephalus | 1980 | Definite | Established | Natural Dispersal |