| Crustaceans-Barnacles | Amphibalanus improvisus | 1895 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Crustaceans-Barnacles | Austrominius modestus | 2016 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Algae | Bonnemaisonia hamifera | 1902 | Non-native | Established | Hull Fouling |
| Algae | Campylaephora sungminbooi* | 1996 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Crustaceans-Amphipods | Caprella mutica | 2011 | Non-native | Established | Ballast Water, Hull Fouling |
| Algae | Codium fragile ssp. Fragile | 1938 | Non-native | Established | Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal |
| Algae | Colpomenia peregrina* | 1985 | Non-native | Established | Hull Fouling, Natural Dispersal, Oyster Accidental |
| Cnidarians-Hydrozoans | Cordylophora caspia | 1985 | Non-native | Established | None |
| Mollusks-Gastropods | Crepidula fornicata | 1950 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal, Oyster Accidental |
| Algae | Dasysiphonia japonica | 2002 | Non-native | Established | None |
| Crustaceans-Crabs | Eriocheir sinensis | 1986 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Cnidarians-Hydrozoans | Gonionemus vertens | 1921 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Algae | Gracilaria vermiculophylla | 2003 | Non-native | Established | Ballast Water, Fisheries Accidental (not Oyster), Hull Fouling, Oyster Accidental |
| Crustaceans-Crabs | Hemigrapsus sanguineus | 2016 | Non-native | Established | Ballast Water, Hull Fouling |
| Bryozoans | Juxtacribrilina mutabilis | 2011 | Non-native | Established | Hull Fouling |
| Mollusks-Bivalves | Magallana gigas | 2005 | Non-native | Established | Natural Dispersal, Oyster Intentional |
| Annelids-Polychaetes | Marenzelleria viridis | 2010 | Non-native | Established | Ballast Water, Natural Dispersal |
| Crustaceans-Amphipods | Melita nitida | 2018 | Non-native | Established | None |
| Ctenophores | Mnemiopsis leidyi* | 2005 | Non-native | Established | Ballast Water |
| Tunicates | Molgula manhattensis | None | Non-native | Established | None |
| Mollusks-Bivalves | Mya arenaria | None | Non-native | Established | Fisheries Intentional |
| Mollusks-Bivalves | Petricolaria pholadiformis | 1955 | Non-native | Established | Natural Dispersal, Oyster Accidental |
| Mollusks-Gastropods | Potamopyrgus antipodarum | None | Non-native | Established | Aquatic Plant Shipments, Cargo, Fisheries Accidental (not Oyster) |
| Platyhelminthes | Pseudodactylogyrus anguillae* | 1989 | Non-native | Established | Fisheries Accidental (not Oyster) |
| Algae | Sargassum muticum | 1988 | Non-native | Established | Hull Fouling, Natural Dispersal |
| Annelids-Polychaetes | Streblospio benedicti | 2013 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Tunicates | Styela clava | 2013 | Non-native | Established | Habitat Restoration |
| Arthropoda-Insects | Telmatogeton japonicus* | 1986 | Non-native | Established | Cargo, Hull Fouling |
| Algae | Ulva australis | 2015 | Non-native | Established | Ballast Water |
| Algae | Ulva laetevirens* | 2015 | Non-native | Established | Ballast Water, Hull Fouling |