| Taxonomic Group | Name | Year | |
|---|---|---|---|
| Protozoans | Bonamia ostreae* | 1994 | |
| Tunicates | Botrylloides violaceus | 1998 | |
| Crustaceans-Amphipods | Caprella mutica | 2007 | |
| Crustaceans-Crabs | Carcinus maenas | 1907 | |
| Algae | Codium fragile ssp. Fragile | 1964 | |
| Algae | Colpomenia peregrina* | 2010 | |
| Platyhelminthes | Convoluta convoluta* | 1998 | |
| Platyhelminthes | Cryptocotyle lingua* | 1956 | |
| Annelids-Polychaetes | Hediste diversicolor | 1963 | |
| Mollusks-Gastropods | Littorina littorea | 1880 | |
| Algae | Lomentaria orcadensis* | 1973 | |
| Bryozoans | Membranipora membranacea | 2007 | |
| Algae | Neopyropia yezoensis* | 2005 | |
| Arthropoda-Insects | Petrobius brevistylis* | 1964 | |
| Crustaceans-Mysids | Praunus flexuosus | 2007 | |
| Tunicates | Styela clava | 1998 | |
| Mollusks-Bivalves | Teredo navalis | 1960 |