Nature Tuesday with an expert at SDK

29.09.2026 / Tuesday / 19.00–20.30 offline: auditorium with audience / free admission online: broadcast on the SDK Facebook profile translation into Polish Sign Language There are currently six species of crayfish in Poland's natural environment, and at least four of them can be found in Warsaw ponds. Some of them are native inhabitants, while the others are the result of irresponsible human actions. During the lecture, we will hear stories about the histories and careers of crayfish in domestic waters, threats to nature, and we will learn how to identify individual crayfish and how to protect species native to Poland. Expert: dr inż. Rafał Maciaszek – initiator of the Łowca Obcych project, for which his activities were honored with the title of Climate Man of the Year 2021. He deals with the issues of aquatic invertebrates, such as shrimp and crayfish, as well as invasive alien species. SDK event page Link to the event on FB