Sanna Sopanen has 13 years’ experience in different sectors of marine research. She has participated in many projects funded by EU and national financiers. The projects have dealt with food web dynamics in the Baltic Sea planktonic communities, nutrient limitation and impact of loading in coastal ecosystems, eutrophication, and toxic algae and their interactions and impacts on grazing calanoid copepods, and transfer of algal toxins in planktonic food webs. Also, she has experience of water research studies concerning environmental impact assessments, studies of the state of the water bodies and application documents for water permits and environmental permits. She has worked in the communal sector with mandatory monitoring of the impacts of sewage waters at the entrance of the cities of Helsinki and Espoo, and later as a project expert in the project which aim is to improve the state of the coastal waters and entire Baltic Sea by encouraging municipalities and cities in Baltic countries to carry out water protection measures in voluntary basis.