In May 2023, a group of M.Sc. Ecotoxicology students along with Carsten Brühl went to the Ecosystem Research Facility, Eusserthal (EERES) and the Riparian Stream Mesocosms (RSM). This excursion was a part of a module in the study program of M.Sc. Environmental Pollution Management (Ecotoxicology). In this blogpost, Danisa Lione and Hajar Bourassi (student representatives of the 2022 cohort), present some brief details about the excursion and their experience.