| Fishes | Ameiurus nebulosus | 1990 | Non-native | Established | None |
| Crustaceans-Amphipods | Ampithoe valida | 2006 | Non-native | Established | Ballast Water, Discarded Bait, Hull Fouling, Oyster Accidental |
| Mollusks-Gastropods | Assiminea parasitologica | 2008 | Non-native | Established | Ballast Water, Fisheries Accidental (not Oyster), Hull Fouling |
| Tunicates | Botrylloides violaceus | 2010 | Non-native | Established | Hull Fouling |
| Algae | Campylaephora sungminbooi* | 1998 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Crustaceans-Crabs | Carcinus maenas | 1998 | Non-native | Established | Ballast Water, Discarded Bait, Hull Fouling, Natural Dispersal |
| Algae | Gracilaria vermiculophylla | 2017 | Non-native | Established | Oyster Accidental |
| Crustaceans-Amphipods | Grandidierella japonica | 1994 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Annelids-Polychaetes | Hediste diadroma | 2009 | Non-native | Established | Ballast Water, Hull Fouling |
| Annelids-Polychaetes | Hobsonia florida | 2000 | Non-native | Established | Oyster Accidental |
| Crustaceans-Amphipods | Incisocalliope derzhavini | 1987 | Non-native | Established | Ballast Water, Hull Fouling |
| Crustaceans-Isopods | Limnoria tripunctata | 1964 | Non-native | Established | Hull Fouling, Oyster Accidental |
| Fishes | Lucania parva | 1958 | Non-native | Established | Fisheries Accidental (not Oyster) |
| Mollusks-Bivalves | Magallana gigas | 1906 | Non-native | Established | Oyster Intentional |
| Crustaceans-Amphipods | Melita nitida | 1986 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Intentional |
| Crustaceans-Amphipods | Monocorophium acherusicum | 1905 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Crustaceans-Amphipods | Monocorophium insidiosum | 2003 | Non-native | Established | Ballast Water, Hull Fouling |
| Fishes | Morone saxatilis | 1945 | Non-native | Established | Natural Dispersal |
| Mollusks-Bivalves | Mya arenaria | 1917 | Non-native | Established | Fisheries Intentional |
| Mollusks-Gastropods | Myosotella myosotis | 1978 | Non-native | Established | Cargo, Dry Ballast, Oyster Accidental |
| Crustaceans-Copepods | Mytilicola orientalis | 1963 | Non-native | Established | Hull Fouling, Oyster Accidental |
| Cnidarians-Anthozoans | Nematostella vectensis | 2009 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Crustaceans-Cumaceans | Nippoleucon hinumensis | 1988 | Non-native | Established | Ballast Water, Oyster Accidental |
| Mollusks-Bivalves | Nuttallia obscurata | 2003 | Non-native | Established | Fisheries Accidental (not Oyster), Natural Dispersal |
| Crustaceans-Isopods | Orthione griffenis | 1999 | Non-native | Established | Ballast Water |
| Annelids-Polychaetes | Polydora cornuta | 1970 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Mollusks-Gastropods | Potamopyrgus antipodarum | 2008 | Non-native | Established | Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal |
| Crustaceans-Copepods | Pseudodiaptomus inopinus | None | Non-native | Established | Ballast Water |
| Annelids-Polychaetes | Pseudopolydora cf. kempi | 1974 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Crustaceans-Crabs | Rhithropanopeus harrisii | 1978 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Algae | Sargassum muticum | 1966 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal, Oyster Accidental |
| Crustaceans-Tanaids | Sinelobus cf. stanfordi | 2003 | Non-native | Established | Ballast Water, Hull Fouling |
| Crustaceans-Isopods | Sphaeroma quoianum | 2005 | Non-native | Established | Ballast Water, Hull Fouling |
| Annelids-Polychaetes | Streblospio benedicti | 1974 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |