| Taxonomic Group | Name | Year | |
|---|---|---|---|
| Nematodes | Anguillicola crassus* | 2005 | |
| Protozoans | Bonamia ostreae* | 1991 | |
| Tunicates | Botrylloides violaceus | 1978 | |
| Crustaceans-Amphipods | Caprella mutica | 2007 | |
| Crustaceans-Crabs | Carcinus maenas | 1907 | |
| Tunicates | Ciona intestinalis | None | |
| Crustaceans-Amphipods | Corophium volutator | 1975 | |
| Tunicates | Didemnum vexillum | 1982 | |
| Algae | Grateloupia turuturu | 2017 | |
| Protozoans | Haplosporidium nelsoni* | 2010 | |
| Annelids-Polychaetes | Hediste diversicolor | 1955 | |
| Crustaceans-Isopods | Ianiropsis serricaudis | None | |
| Crustaceans-Isopods | Ligia oceanica | 2016 | |
| Mollusks-Gastropods | Littorina littorea | 1971 | |
| Bryozoans | Membranipora membranacea | 1992 | |
| Mollusks-Bivalves | Ostrea edulis | 1962 | |
| Protozoans | Perkinsus marinus* | 1995 | |
| Arthropoda-Insects | Petrobius brevistylis* | 1967 | |
| Tunicates | Styela clava | 2007 | |
| Mollusks-Bivalves | Teredo navalis | None |