The article offers information relaed to the Estonian Naturalists' Society (ENS) that has 22 subunits. It is noted that ten General Assemblies with scientific presentations were held in 2015. Some of the activities of subunits of ENS during 2015 include the XI Geology Autumn School on the theme "195 years of geology in Estonia" in Tartu on October 16-18, 2016; Toomas Kukk "Herbarisation and Herbarium," presented on November 20, 2016.