| Taxonomic Group | Name | Year | Invasion Status | Population Status | |
|---|---|---|---|---|---|
| Annelids-Polychaetes | Alitta succinea | 1998 | Definite | Estab | |
| Fishes | Alosa sapidissima | 1882 | Definite | Estab | |
| Crustaceans-Amphipods | Ampithoe valida | 1998 | Definite | Estab | |
| Mollusks-Bivalves | Arcuatula senhousia | 1959 | Definite | Estab | |
| Entoprocts | Barentsia benedeni | 1998 | Definite | Estab | |
| Mollusks-Gastropods | Batillaria attramentaria | 1977 | Definite | Estab | |
| Tunicates | Botrylloides violaceus | 1998 | Definite | Estab | |
| Tunicates | Botryllus schlosseri | 1998 | Definite | Estab | |
| Bryozoans | Bugulina stolonifera | 1998 | Definite | Estab | |
| Crustaceans-Isopods | Caecidotea racovitzai | 1997 | Definite | Estab | |
| Crustaceans-Amphipods | Caprella mutica | 1998 | Definite | Estab | |
| Crustaceans-Crabs | Carcinus maenas | 2022 | Definite | Estab | |
| Arthropoda-Insects | Chilacis typhae* | 1997 | Definite | Estab | |
| Algae | Chorda asiatica | 1993 | Definite | Estab | |
| Tunicates | Ciona savignyi | 1998 | Definite | Estab | |
| Cnidarians-Hydrozoans | Cordylophora caspia | 1920 | Definite | Estab | |
| Mollusks-Gastropods | Crepidula fornicata | 1931 | Definite | Estab | |
| Bryozoans | Cryptosula pallasiana | 1972 | Definite | Estab | |
| Cnidarians-Anthozoans | Diadumene lineata | 1939 | Definite | Estab | |
| Tunicates | Didemnum vexillum | 2004 | Definite | Estab | |
| Tunicates | Diplosoma listerianum | 1966 | Definite | Estab | |
| Crustaceans-Amphipods | Eochelidium sp. A | 1997 | Definite | Estab | |
| Crustaceans-Amphipods | Grandidierella japonica | 1977 | Definite | Estab | |
| Sponges | Halichondria bowerbanki* | 1998 | Definite | Estab | |
| Mollusks-Gastropods | Haloa japonica | 2006 | Definite | Estab | |
| Annelids-Polychaetes | Hediste diadroma | 2012 | Definite | Estab | |
| Annelids-Polychaetes | Hobsonia florida | 1940 | Definite | Estab | |
| Crustaceans-Isopods | Ianiropsis serricaudis | 2010 | Definite | Estab | |
| Crustaceans-Amphipods | Incisocalliope derzhavini | 1998 | Definite | Estab | |
| Crustaceans-Amphipods | Jassa marmorata | 1998 | Definite | Estab | |
| Platyhelminthes | Koinostylochus ostreophagus* | 1953 | Definite | Estab | |
| Crustaceans-Isopods | Limnoria tripunctata | 1998 | Definite | Estab | |
| Mollusks-Bivalves | Magallana gigas | 1902 | Definite | Estab | |
| Crustaceans-Amphipods | Melita nitida | 1966 | Definite | Estab | |
| Tunicates | Molgula manhattensis | 1998 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium acherusicum | 1915 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium insidiosum | 1915 | Definite | Estab | |
| Mollusks-Bivalves | Mya arenaria | 1888 | Definite | Estab | |
| Mollusks-Gastropods | Myosotella myosotis | 1936 | Definite | Estab | |
| Crustaceans-Copepods | Mytilicola orientalis | 1943 | Definite | Estab | |
| Mollusks-Bivalves | Mytilus galloprovincialis | 1994 | Definite | Estab | |
| Cnidarians-Anthozoans | Nematostella vectensis | 1993 | Definite | Estab | |
| Crustaceans-Cumaceans | Nippoleucon hinumensis | 1998 | Definite | Estab | |
| Mollusks-Bivalves | Nuttallia obscurata | 1998 | Definite | Estab | |
| Mollusks-Gastropods | Ocinebrellus inornatus | 1932 | Definite | Estab | |
| Crustaceans-Isopods | Orthione griffenis | 1995 | Definite | Estab | |
| Annelids-Polychaetes | Polydora cornuta | 1940 | Definite | Estab | |
| Mollusks-Gastropods | Potamopyrgus antipodarum | 2009 | Definite | Estab | |
| Annelids-Polychaetes | Pseudopolydora cf. kempi | 1979 | Definite | Estab | |
| Annelids-Polychaetes | Pseudopolydora paucibranchiata | 2007 | Definite | Estab | |
| Mollusks-Bivalves | Ruditapes philippinarum | 1943 | Definite | Estab | |
| Algae | Sargassum muticum | 1950 | Definite | Estab | |
| Bryozoans | Schizoporella japonica | 1943 | Definite | Estab | |
| Crustaceans-Tanaids | Sinelobus cf. stanfordi | 2000 | Definite | Estab | |
| Annelids-Polychaetes | Streblospio benedicti | 1998 | Definite | Estab | |
| Tunicates | Styela clava | 2005 | Definite | Estab | |
| Bryozoans | Watersipora n. sp. | 2010 | Definite | Estab |