| Annelids-Polychaetes | Alitta succinea | 1964 | Definite | Estab | |
| Bryozoans | Amathia verticillata | None | Definite | Estab | |
| Crustaceans-Barnacles | Amphibalanus amphitrite | 1935 | Definite | Estab | |
| Crustaceans-Barnacles | Amphibalanus eburneus | 1950 | Definite | Estab | |
| Crustaceans-Barnacles | Amphibalanus improvisus | 1952 | Definite | Estab | |
| Arthropoda-Insects | Anisolabis maritima | 1926 | Definite | Estab | |
| Tunicates | Botrylloides diegensis | 2005 | Definite | Estab | |
| Bryozoans | Bugulina stolonifera | 1960 | Definite | Estab | |
| Crustaceans-Crabs | Carcinus maenas | 1984 | Definite | Estab | |
| Mollusks-Gastropods | Crepidula onyx | 1968 | Definite | Estab | |
| Mollusks-Gastropods | Cuthona perca | 2019 | Definite | Estab | |
| Cnidarians-Hydrozoans | Ectopleura crocea | 1907 | Definite | Estab | |
| Annelids-Polychaetes | Ficopomatus enigmaticus | 1966 | Definite | Estab | |
| Fishes | Gambusia affinis | 1916 | Definite | Estab | |
| Platyhelminthes | Gyrodactylus anguillae* | 1976 | Definite | Estab | |
| Annelids-Polychaetes | Hydroides dianthus | 2006 | Definite | Estab | |
| Crustaceans-Barnacles | Megabalanus coccopoma | 2005 | Definite | Estab | |
| Mollusks-Bivalves | Mercenaria mercenaria | 1995 | Definite | Estab | |
| Tunicates | Microcosmus squamiger | 2007 | Definite | Estab | |
| Tunicates | Molgula manhattensis | 1972 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium acherusicum | 1955 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium insidiosum | 1955 | Definite | Estab | |
| Mollusks-Bivalves | Mytilopsis sallei* | 1974 | Definite | Estab | |
| Mollusks-Bivalves | Mytilus galloprovincialis | 1934 | Definite | Estab | |
| Crustaceans-Isopods | Paracerceis sculpta | 1986 | Definite | Estab | |
| Mollusks-Bivalves | Perna viridis | 1967 | Definite | Estab | |
| Tunicates | Polyandrocarpa zorritensis | 1991 | Definite | Estab | |
| Mollusks-Gastropods | Polycera hedgpethi | 2000 | Definite | Estab | |
| Annelids-Polychaetes | Polydora cornuta | 1997 | Definite | Estab | |
| Crustaceans-Crabs | Pyromaia tuberculata | 1970 | Definite | Estab | |
| Crustaceans-Crabs | Rhithropanopeus harrisii | 2005 | Definite | Estab | |
| Cnidarians-Hydrozoans | Turritopsis dohrnii | None | Definite | Estab | |