| Taxonomic Group | Name | Year | |
|---|---|---|---|
| Crustaceans-Crabs | Carcinus maenas | 1912 | |
| Algae | Codium fragile ssp. Fragile | 1995 | |
| Algae | Colpomenia peregrina* | 2011 | |
| Crustaceans-Amphipods | Corophium volutator | 1975 | |
| Tunicates | Didemnum vexillum | 2002 | |
| Annelids-Polychaetes | Hediste diversicolor | 2012 | |
| Crustaceans-Crabs | Hemigrapsus sanguineus | 2001 | |
| Mollusks-Gastropods | Littorina littorea | 1880 | |
| Mollusks-Bivalves | Teredo navalis | 1960 |