On June 23, 2018, the IV Science Picnic under the slogan “Science is also art” took place in the Olsztyn Old Town, where the Nencki Institute Research Stationon in Mikołajki and the other instituts of the Polish Academy of Sciences presented and explained in a interesting and accessible way a serious scientific issues. In the tent of the Research Station – Mikołajki, you could see in 3D technology, live, beautiful planktonic organisms of our lakes, learn about summer algae blooms, food chains, cladocerans, rotifers and cyclops (TJ).