| Fishes | Acanthogobius flavimanus | 1978 | Definite | Estab | |
| Annelids-Polychaetes | Alitta succinea | 1952 | Definite | Estab | |
| Bryozoans | Amathia dichotoma* | 2017 | Definite | Estab | |
| Bryozoans | Amathia verticillata | 1905 | Definite | Estab | |
| Annelids-Polychaetes | Amblyosyllis nigrolineata | 1975 | Definite | Estab | |
| Crustaceans-Amphipods | Ampelisca abdita | 2001 | Definite | Estab | |
| Crustaceans-Barnacles | Amphibalanus amphitrite | 1914 | Definite | Estab | |
| Crustaceans-Barnacles | Amphibalanus eburneus | 2000 | Definite | Estab | |
| Crustaceans-Barnacles | Amphibalanus improvisus | 1932 | Definite | Estab | |
| Crustaceans-Amphipods | Ampithoe valida | 1942 | Definite | Estab | |
| Bryozoans | Anguinella palmata | 1914 | Definite | Estab | |
| Crustaceans-Amphipods | Aoroides secunda | 1998 | Definite | Estab | |
| Tunicates | Aplidium accarense* | 2019 | Definite | Estab | |
| Mollusks-Bivalves | Arcuatula senhousia | 1965 | Definite | Estab | |
| Tunicates | Ascidia cf. virginea* | 2019 | Definite | Estab | |
| Tunicates | Ascidia zara | 1984 | Definite | Estab | |
| Tunicates | Ascidiella aspersa | 2018 | Definite | Estab | |
| Crustaceans-Ostracods | Aspidoconcha limnoriae | 1953 | Definite | Estab | |
| Cnidarians-Scyphozoans | Aurelia coerulea | 2000 | Definite | Estab | |
| Entoprocts | Barentsia benedeni | 2011 | Definite | Estab | |
| Tunicates | Botrylloides diegensis | 1917 | Definite | Estab | |
| Tunicates | Botrylloides giganteus | 1997 | Definite | Estab | |
| Tunicates | Botrylloides violaceus | 1966 | Definite | Estab | |
| Tunicates | Botryllus schlosseri | 1965 | Definite | Estab | |
| Protozoans | Boveria teredinidi* | 1951 | Definite | Estab | |
| Annelids-Polychaetes | Branchiomma bairdi | 2000 | Definite | Estab | |
| Algae | Bryopsis sp. 1* | 2011 | Definite | Estab | |
| Bryozoans | Bugula neritina | 1905 | Definite | Estab | |
| Bryozoans | Bugulina cf. foliolata | 2000 | Definite | Estab | |
| Bryozoans | Bugulina stolonifera | 1950 | Definite | Estab | |
| Cnidarians-Anthozoans | Bunodeopsis sp. A | 1995 | Definite | Estab | |
| Crustaceans-Isopods | Caecijaera horvathi | 1951 | Definite | Estab | |
| Cnidarians-Hydrozoans | Calyptospadix cerulea | 1941 | Definite | Estab | |
| Crustaceans-Amphipods | Caprella mutica | 2000 | Definite | Estab | |
| Crustaceans-Amphipods | Caprella scaura | 2001 | Definite | Estab | |
| Crustaceans-Amphipods | Caprella simia | 2000 | Definite | Estab | |
| Mollusks-Gastropods | Catriona rickettsi | 1980 | Definite | Estab | |
| Algae | Caulacanthus okamurae | 1961 | Definite | Estab | |
| Nemerteans | Cephalothrix cf. simula* | 2009 | Definite | Estab | |
| Sponges | Chalinula loosanoffi* | 2001 | Definite | Estab | |
| Crustaceans-Amphipods | Chelura terebrans | 1950 | Definite | Estab | |
| Tunicates | Ciona robusta | 1897 | Definite | Estab | |
| Tunicates | Ciona savignyi | 1985 | Definite | Estab | |
| Algae | Colpomenia claytoniae | 1999 | Definite | Estab | |
| Crustaceans-Amphipods | Corophium alienense | 2007 | Definite | Estab | |
| Crustaceans-Amphipods | Corophium heteroceratum | 1990 | Definite | Estab | |
| Protozoans | Cothurnia limnoriae* | 1951 | Definite | Estab | |
| Mollusks-Gastropods | Crepidula convexa | 2015 | Definite | Estab | |
| Bryozoans | Cryptosula pallasiana | 1944 | Definite | Estab | |
| Cnidarians-Anthozoans | Diadumene franciscana | 1977 | Definite | Estab | |
| Cnidarians-Anthozoans | Diadumene leucolena | 1954 | Definite | Estab | |
| Cnidarians-Anthozoans | Diadumene lineata | 1956 | Definite | Estab | |
| Cnidarians-Anthozoans | Diadumene paranaensis | 2012 | Definite | Estab | |
| Tunicates | Didemnum vexillum | 2007 | Definite | Estab | |
| Annelids-Polychaetes | Diplocirrus SD1 | 1998 | Definite | Estab | |
| Tunicates | Diplosoma listerianum | 1899 | Definite | Estab | |
| Cnidarians-Hydrozoans | Ectopleura crocea | 1876 | Definite | Estab | |
| Algae | Elachista nigra | 1984 | Definite | Estab | |
| Crustaceans-Amphipods | Eochelidium sp. A | 1988 | Definite | Estab | |
| Annelids-Polychaetes | Epigamia noroi | 2001 | Definite | Estab | |
| Cnidarians-Anthozoans | Exaiptasia pallida | 1937 | Definite | Estab | |
| Annelids-Polychaetes | Ficopomatus enigmaticus | 2000 | Definite | Estab | |
| Fishes | Gambusia affinis | 1968 | Definite | Estab | |
| Mollusks-Bivalves | Geukensia demissa | 1955 | Definite | Estab | |
| Cnidarians-Hydrozoans | Gonionemus vertens | 1965 | Definite | Estab | |
| Algae | Gracilaria vermiculophylla | 1979 | Definite | Estab | |
| Crustaceans-Amphipods | Grandidierella japonica | 1979 | Definite | Estab | |
| Algae | Grateloupia turuturu | 2008 | Definite | Estab | |
| Sponges | Halichondria bowerbanki* | 2001 | Definite | Estab | |
| Mollusks-Gastropods | Haloa japonica | 2013 | Definite | Estab | |
| Annelids-Polychaetes | Heteromastus filiformis species complex | 2011 | Definite | Estab | |
| Bryozoans | Hippopodina iririkiensis* | 2013 | Definite | Estab | |
| Sponges | Hymeniacidon perlevis* | 1914 | Definite | Estab | |
| Crustaceans-Isopods | Iais californica | 1957 | Definite | Estab | |
| Crustaceans-Amphipods | Incisocalliope derzhavini | 2011 | Definite | Estab | |
| Crustaceans-Amphipods | Jassa marmorata | 1958 | Definite | Estab | |
| Crustaceans-Amphipods | Leucothoe nagatai | 1979 | Definite | Estab | |
| Annelids-Oligochaetes | Limnodrilus monothecus* | 1960 | Definite | Estab | |
| Crustaceans-Isopods | Limnoria quadripunctata | 1949 | Definite | Estab | |
| Crustaceans-Isopods | Limnoria tripunctata | 1871 | Definite | Estab | |
| Protozoans | Lobochona prorates* | 1963 | Definite | Estab | |
| Algae | Lomentaria hakodatensis* | 1913 | Definite | Estab | |
| Mollusks-Bivalves | Lyrodus pedicellatus | 1871 | Definite | Estab | |
| Mollusks-Bivalves | Magallana gigas | 2000 | Definite | Estab | |
| Annelids-Polychaetes | Megasyllis nipponica | 1997 | Definite | Estab | |
| Crustaceans-Amphipods | Melita nitida | 2007 | Definite | Estab | |
| Crustaceans-Amphipods | Melita rylovae | 2000 | Definite | Estab | |
| Fishes | Menidia audens | 1997 | Definite | Estab | |
| Tunicates | Microcosmus squamiger | 1986 | Definite | Estab | |
| Protozoans | Mirofolliculina limnoriae* | 1948 | Definite | Estab | |
| Tunicates | Molgula ficus | 1994 | Definite | Estab | |
| Tunicates | Molgula manhattensis | 1984 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium acherusicum | 1946 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium insidiosum | 1950 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium uenoi | 1946 | Definite | Estab | |
| Algae | Mutimo cylindricus | 1973 | Definite | Estab | |
| Mollusks-Gastropods | Myosotella myosotis | 1915 | Definite | Estab | |
| Annelids-Polychaetes | Myrianida convoluta | 2001 | Definite | Estab | |
| Annelids-Polychaetes | Myrianida pachycera | 1990 | Definite | Estab | |
| Annelids-Polychaetes | Myrianida pentadentata | 2001 | Definite | Estab | |
| Mollusks-Bivalves | Mytilus galloprovincialis | 1987 | Definite | Estab | |
| Annelids-Polychaetes | Neoamphitrite sp. A | 2004 | Definite | Estab | |
| Annelids-Polychaetes | Neodexiospira brasiliensis | 1974 | Definite | Estab | |
| Annelids-Polychaetes | Nicolea sp. A. Harris | 2000 | Definite | Estab | |
| Crustaceans-Cumaceans | Nippoleucon hinumensis | 2001 | Definite | Estab | |
| Bryozoans | Nolella sawayai* | 2018 | Definite | Estab | |
| Crustaceans-Copepods | Oithona davisae | 2000 | Definite | Estab | |
| Mollusks-Gastropods | Okenia plana | 1995 | Definite | Estab | |
| Fishes | Oreochromis mossambicus | 1973 | Definite | Estab | |
| Crustaceans-Isopods | Orthione griffenis | 2003 | Definite | Estab | |
| Algae | Pachymeniopsis lanceolata* | 2003 | Definite | Estab | |
| Algae | Padina durvillei* | 2016 | Definite | Estab | |
| Crustaceans-Shrimp | Palaemon macrodactylus | 1962 | Definite | Estab | |
| Crustaceans-Amphipods | Paradexamine sp. SD1 | 1991 | Definite | Estab | |
| Crustaceans-Isopods | Paranthura japonica | 2000 | Definite | Estab | |
| Annelids-Polychaetes | Parasabella fullo | 2011 | Definite | Estab | |
| Tunicates | Perophora japonica | 2011 | Definite | Estab | |
| Mollusks-Bivalves | Petricolaria pholadiformis | 2021 | Definite | Estab | |
| Mollusks-Gastropods | Philine auriformis | 1994 | Definite | Estab | |
| Algae | Phycocalidia suborbiculata* | 1986 | Definite | Estab | |
| Cnidarians-Scyphozoans | Phyllorhiza punctata | 1981 | Definite | Estab | |
| Fishes | Poecilia latipinna | 1977 | Definite | Estab | |
| Tunicates | Polyandrocarpa zorritensis | 1994 | Definite | Estab | |
| Annelids-Polychaetes | Polydora cornuta | 1938 | Definite | Estab | |
| Annelids-Polychaetes | Polydora hoplura | 2011 | Definite | Estab | |
| Crustaceans-Copepods | Pseudodiaptomus marinus | 1986 | Definite | Estab | |
| Annelids-Polychaetes | Pseudopolydora cf. kempi | 1972 | Definite | Estab | |
| Annelids-Polychaetes | Pseudopolydora paucibranchiata | 1951 | Definite | Estab | |
| Crustaceans-Ostracods | Redekea californica | 1953 | Definite | Estab | |
| Protozoans | Rhizodomus tagatzi* | 2004 | Definite | Estab | |
| Mollusks-Bivalves | Ruditapes philippinarum | 1998 | Definite | Estab | |
| Algae | Sargassum horneri | 2003 | Definite | Estab | |
| Algae | Sargassum muticum | 1959 | Definite | Estab | |
| Bryozoans | Schizoporella japonica | 2015 | Definite | Estab | |
| Algae | Schizymenia dubyi* | 1957 | Definite | Estab | |
| Crustaceans-Tanaids | Sinelobus cf. stanfordi | 2000 | Definite | Estab | |
| Crustaceans-Isopods | Sphaeroma quoianum | 1927 | Definite | Estab | |
| Crustaceans-Isopods | Sphaeroma walkeri | 1973 | Definite | Estab | |
| Crustaceans-Amphipods | Stenothoe valida | 1951 | Definite | Estab | |
| Crustaceans-Copepods | Stephos robustus* | 2018 | Definite | Estab | |
| Annelids-Polychaetes | Streblospio benedicti | 1951 | Definite | Estab | |
| Tunicates | Styela canopus | 1972 | Definite | Estab | |
| Tunicates | Styela clava | 1933 | Definite | Estab | |
| Tunicates | Styela plicata | 1915 | Definite | Estab | |
| Tunicates | Symplegma reptans | 1995 | Definite | Estab | |
| Mollusks-Gastropods | Tenellia adspersa | 1968 | Definite | Estab | |
| Mollusks-Bivalves | Teredo bartschi | 2001 | Definite | Estab | |
| Arthropoda-Insects | Thambemyia borealis* | 1993 | Definite | Estab | |
| Mollusks-Bivalves | Theora lubrica | 1969 | Definite | Estab | |
| Fishes | Tridentiger trigonocephalus | 1960 | Definite | Estab | |
| Annelids-Oligochaetes | Tubificoides brownae* | 1994 | Definite | Estab | |
| Cnidarians-Hydrozoans | Turritopsis dohrnii | 2010 | Definite | Estab | |
| Algae | Ulva australis | 1978 | Definite | Estab | |
| Algae | Undaria pinnatifida | 2000 | Definite | Estab | |
| Mollusks-Gastropods | Urosalpinx cinerea | 1957 | Definite | Estab | |
| Bryozoans | Victorella pavida | 2004 | Definite | Estab | |
| Bryozoans | Watersipora arcuata | 1959 | Definite | Estab | |
| Bryozoans | Watersipora n. sp. | 2006 | Definite | Estab | |
| Bryozoans | Watersipora subatra* | 2010 | Definite | Estab | |
| Bryozoans | Watersipora subtorquata | 1937 | Definite | Estab | |