| Species Name | Country / Port | Port / Vicinity? | Detection Year |
|---|---|---|---|
| Styela clava | Germany / Wilhelmshaven | port | 2009 |
| Styela clava | Germany / List | port | 2009 |
| Styela clava | Germany / Hörnum | port | 2009 |
| Styela clava | Germany / Jade-Weser-Port | port | 2018 |
| Styela clava | Germany / Jade-Weser-Port | vicinity | 2016 |