| Crustaceans-Barnacles | Amphibalanus amphitrite | 1978 | Definite | Established | Ballast Water, Hull Fouling |
| Nematodes | Anguillicola crassus* | 2011 | Definite | Established | Natural Dispersal |
| Cnidarians-Hydrozoans | Blackfordia virginica | 1978 | Definite | Established | Ballast Water, Hull Fouling |
| Cnidarians-Anthozoans | Diadumene lineata | 1978 | Definite | Established | Hull Fouling |
| Tunicates | Diplosoma listerianum | 2018 | Definite | Established | None |
| Fishes | Dorosoma petenense | 1974 | Definite | Established | Oyster Intentional |
| Nemerteans | Emplectonema 'gracile'* | 2007 | Definite | Established | Ballast Water, Hull Fouling |
| Arthropoda-Insects | Holcocranum saturejae* | 1995 | Definite | Established | Cargo, Dry Ballast, Packing Material |
| Crustaceans-Shrimp | Macrobrachium nipponense* | 2020 | Definite | Established | Ballast Water, Pet Release |
| Crustaceans-Barnacles | Megabalanus coccopoma | 2006 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Crustaceans-Shrimp | Penaeus monodon | 2008 | Definite | Established | Fisheries Accidental (not Oyster), Natural Dispersal |
| Crustaceans-Crabs | Petrolisthes armatus | 1997 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal, Oyster Accidental |
| Cnidarians-Scyphozoans | Phyllorhiza punctata | 2007 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Arthropoda-Insects | Procanace dianneae* | 1989 | Definite | Established | None |
| Tunicates | Styela canopus | 1980 | Definite | Established | Hull Fouling |
| Tunicates | Styela plicata | 1919 | Definite | Established | Hull Fouling |
| Mollusks-Bivalves | Teredo navalis | 1959 | Definite | Established | Hull Fouling |