Characteristics of the water in the Adriatic Sea and Lake Ohrid and their comparison

The Adriatic Sea and Ohrid Lake are located in South Europe. Ohrid Lake belongs to the Republic of North Macedonia and the Republic of Albania. The distance between these water bodies is 110 km. The river Crn Drim flows out of the Ohrid Lake and flows into the Adriatic Sea, connecting the two water bodies.

Pupils from the cities Ohrid and Skopje (North Macedonia), at the age of 10 years, have made investigations about water characteristics of the Adriatic Sea and Lake Ohrid. Pupils from Skopje investigated the water properties of the Adriatic Sea, whereas pupils from Ohrid investigated the water characteristics of Ohrid Lake. There were analyzed several parameters for the two water bodies: physical and chemical characteristics of the water (water temperature, conductivity, pH, transparency, chemical composition) and water movements (waves, currents). The results of the pupil’s investigations were presented at the meeting in Ohrid.