| Taxonomic Group | Name | Year | Invasion Status | Population Status | |
|---|---|---|---|---|---|
| Crustaceans-Amphipods | Aoroides secunda | 2011 | Definite | Estab | |
| Tunicates | Aplidium accarense* | 2020 | Definite | Estab | |
| Tunicates | Ascidia zara | 1996 | Definite | Estab | |
| Tunicates | Botrylloides giganteus | 2020 | Definite | Estab | |
| Tunicates | Botrylloides violaceus | 1966 | Definite | Estab | |
| Tunicates | Botryllus schlosseri | 1996 | Definite | Estab | |
| Bryozoans | Bugula neritina | 2001 | Definite | Estab | |
| Crustaceans-Amphipods | Caprella mutica | 2002 | Definite | Estab | |
| Crustaceans-Amphipods | Caprella simia | 2011 | Definite | Estab | |
| Nemerteans | Cephalothrix cf. simula* | 2009 | Definite | Estab | |
| Tunicates | Ciona robusta | 1970 | Definite | Estab | |
| Tunicates | Ciona savignyi | 1994 | Definite | Estab | |
| Bryozoans | Cryptosula pallasiana | 2001 | Definite | Estab | |
| Cnidarians-Anthozoans | Diadumene leucolena | 1977 | Definite | Estab | |
| Cnidarians-Anthozoans | Diadumene paranaensis | 2012 | Definite | Estab | |
| Tunicates | Diplosoma listerianum | 1977 | Definite | Estab | |
| Cnidarians-Anthozoans | Exaiptasia pallida | None | Definite | Estab | |
| Annelids-Polychaetes | Ficopomatus enigmaticus | 2008 | Definite | Estab | |
| Cnidarians-Hydrozoans | Gonionemus vertens | 1965 | Definite | Estab | |
| Algae | Grateloupia turuturu | 2009 | Definite | Estab | |
| Sponges | Halichondria bowerbanki* | 2007 | Definite | Estab | |
| Sponges | Hymeniacidon perlevis* | 1977 | Definite | Estab | |
| Crustaceans-Amphipods | Leucothoe nagatai | 2011 | Definite | Estab | |
| Crustaceans-Isopods | Limnoria quadripunctata | 1951 | Definite | Estab | |
| Mollusks-Bivalves | Lyrodus pedicellatus | 1951 | Definite | Estab | |
| Annelids-Polychaetes | Megasyllis nipponica | 2011 | Definite | Estab | |
| Tunicates | Microcosmus squamiger | 2001 | Definite | Estab | |
| Tunicates | Molgula manhattensis | 2001 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium acherusicum | 2011 | Definite | Estab | |
| Crustaceans-Amphipods | Monocorophium uenoi | 1961 | Definite | Estab | |
| Mollusks-Bivalves | Mytilus galloprovincialis | 1990 | Definite | Estab | |
| Crustaceans-Isopods | Niambia capensis | 2014 | Definite | Estab | |
| Crustaceans-Isopods | Orthione griffenis | 2003 | Definite | Estab | |
| Algae | Pachymeniopsis lanceolata* | 2011 | Definite | Estab | |
| Annelids-Polychaetes | Parasabella fullo | 2011 | Definite | Estab | |
| Mollusks-Gastropods | Philine auriformis | 1998 | Definite | Estab | |
| Tunicates | Polyandrocarpa zorritensis | 2020 | Definite | Estab | |
| Annelids-Polychaetes | Polydora cornuta | 1971 | Definite | Estab | |
| Annelids-Polychaetes | Pseudopolydora paucibranchiata | 1975 | Definite | Estab | |
| Algae | Sargassum horneri | 2010 | Definite | Estab | |
| Algae | Sargassum muticum | 1977 | Definite | Estab | |
| Algae | Schizymenia dubyi* | 1957 | Definite | Estab | |
| Tunicates | Styela clava | 1994 | Definite | Estab | |
| Tunicates | Styela plicata | 1970 | Definite | Estab | |
| Protozoans | Trochammina hadai* | 1998 | Definite | Estab | |
| Algae | Undaria pinnatifida | 2001 | Definite | Estab | |
| Bryozoans | Watersipora arcuata | 2007 | Definite | Estab | |
| Bryozoans | Watersipora n. sp. | 2007 | Definite | Estab | |
| Bryozoans | Watersipora subatra* | 2014 | Definite | Estab | |
| Bryozoans | Watersipora subtorquata | 2001 | Definite | Estab |