The project is focused on the joint research in hydrology, meteorology and biology and exchange of experience and mutual learning in the course of scientific measurements and activities related to it. Students will be conducting identical hydrology measurements of the quality of lake water and observations of the water animals living in the lake and the plants growing in and around the lake. They will process the measured values and results of observations and draw conclusions. It will assist them to understand how the quality of the lake water influences biodiversity in and around the lake and whether it is similar in the regiuon of partner schools.