» Halophila stipulacea

one of the 100 worst alien species in Europe, click here to see the full list.

Delivering Alien Invasive Species Inventories for Europe

Biological invasions by non-native or 'alien' species are one of the greatest threats to the ecological and economic well-being of the planet. Alien species can act as vectors for new diseases, alter ecosystem processes, change biodiversity, disrupt cultural landscapes, reduce the value of land and water for human activities and cause other socio-economic consequences for man.

To help those tackling the invasive species challenge, this website provides a 'one-stop-shop' for information on biological invasions in Europe. Please note that the DAISIE database behind this website is continually being updated. Read more about DAISIE.


Search Species

Search for information on one of the 12122 alien species occurring in Europe.

Search Regions

Search regions to explore the alien species threats across Europe, for 78 inland and 57 coastal and marine areas.

Search Experts

Search for one of the 2440 experts on biological invasions in Europe