Dr. Stephan Gollasch was involved in the first European ship sampling programme on ballast water, tank sediments and ship hull fouling (1992-1996). His PhD is world-wide the first thesis based on ballast water sampling. In addition to laboratory and desk studies he spent more than 125 days at sea during several biological surveys and joint ships on their voyages through the Kiel and Suez Canals. Due to the international aspect of biological invasions Dr. Gollasch became a member of several international working groups: International Council for the Exploration of the Sea (ICES); International