| Taxonomic Group | Name | Year | |
|---|---|---|---|
| Algae | Bonnemaisonia hamifera | 1968 | |
| Tunicates | Botrylloides violaceus | 1998 | |
| Crustaceans-Amphipods | Caprella mutica | 2007 | |
| Crustaceans-Crabs | Carcinus maenas | 1986 | |
| Tunicates | Ciona intestinalis | 1912 | |
| Algae | Codium fragile ssp. Fragile | 1983 | |
| Algae | Colpomenia peregrina* | 2011 | |
| Platyhelminthes | Convoluta convoluta* | 1995 | |
| Platyhelminthes | Cryptocotyle lingua* | 2005 | |
| Algae | Dasysiphonia japonica | 2011 | |
| Tunicates | Didemnum vexillum | 2003 | |
| Tunicates | Diplosoma listerianum | 1993 | |
| Mollusks-Nudibranchs | Doris pseudoargus | 2019 | |
| Algae | Dumontia contorta* | 1996 | |
| Crustaceans-Crabs | Hemigrapsus sanguineus | 1998 | |
| Crustaceans-Isopods | Ligia oceanica | 1951 | |
| Mollusks-Gastropods | Littorina littorea | 2004 | |
| Algae | Lomentaria orcadensis* | 1996 | |
| Bryozoans | Membranipora membranacea | 1987 | |
| Algae | Neopyropia yezoensis* | None | |
| Mollusks-Bivalves | Ostrea edulis | 2003 | |
| Arthropoda-Insects | Petrobius brevistylis* | 1968 | |
| Crustaceans-Mysids | Praunus flexuosus | 1972 | |
| Algae | Ulonema rhizophorum* | None |