| Crustaceans-Barnacles | Amphibalanus amphitrite | 1966 | Definite | Established | Ballast Water, Hull Fouling |
| Nematodes | Anguillicola crassus* | 2014 | Definite | Established | Ballast Water, Fisheries Accidental (not Oyster) |
| Crustaceans-Crabs | Charybdis hellerii | 2004 | Definite | Established | Ballast Water, Natural Dispersal |
| Protozoans | Haplosporidium nelsoni* | 1986 | Definite | Established | Hull Fouling, Natural Dispersal, Oyster Accidental |
| Mollusks-Bivalves | Mytella strigata | 2007 | Definite | Established | Hull Fouling |
| Crustaceans-Crabs | Petrolisthes armatus | 2005 | Definite | Established | Ballast Water, Hull Fouling, Natural Dispersal, Oyster Accidental |