| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Algae | Bonnemaisonia hamifera | 1985 | Definite | Established | Ballast Water, Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal |
| Algae | Codium fragile ssp. Fragile | 1985 | Definite | Established | Ballast Water, Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal, Oyster Accidental |
| Algae | Colpomenia peregrina* | 2010 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Algae | Dasysiphonia japonica | 2013 | Definite | Established | None |
| Algae | Dumontia contorta* | 1980 | Definite | Established | Ballast Water, Hull Fouling |
| Algae | Gracilaria vermiculophylla | 2003 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Algae | Grateloupia turuturu | 2014 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Algae | Lomentaria clavellosa* | 1971 | Definite | Established | Ballast Water, Hull Fouling |
| Algae | Lomentaria orcadensis* | 1883 | Definite | Established | Ballast Water, Hull Fouling |
| Algae | Neopyropia koreana* | 2004 | Definite | Established | Ballast Water, Hull Fouling |
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