English: I asked some fellow biology students to help me creating promotional photos for a citizen science event. The event, "Loodusvaatluste maraton", is a form of BioBlitz where in certain pre-defined areas people try to observe and recognise as many species of wildlife as possible. People can use a special nature observation mobile app "Legulus" for registering observations and transferring them to a national biodiversity database. All data would be open and public, and participants could compare their success live.