| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Algae | Antithamnionella spirographidis* | 1953 | Definite | Established | Hull Fouling |
| Algae | Caulerpa taxifolia (invasive genotype) | 2000 | Definite | Established | Aquatic Plant Shipments, Fisheries Accidental (not Oyster), Hull Fouling |
| Algae | Codium fragile ssp. Fragile | 2001 | Definite | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Algae | Elachista nigra | 1987 | Definite | Established | Ballast Water, Hull Fouling |
| Algae | Striaria attenuata* | 1983 | Definite | Established | Ballast Water, Hull Fouling |
| Annelids-Polychaetes | Polydora cornuta | 1973 | Definite | Established | Ballast Water, Hull Fouling |
| Annelids-Polychaetes | Pseudopolydora cf. kempi | 1975 | Definite | Established | None |
| Annelids-Polychaetes | Pseudopolydora paucibranchiata | 1973 | Definite | Established | Ballast Water, Oyster Accidental |
| Bryozoans | Amathia distans | 1998 | Definite | Established | Hull Fouling |
| Bryozoans | Amathia verticillata | 1975 | Definite | Established | Hull Fouling |
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