In the latest issue of Aqua & Gas, we have published an overview of our study results on groundwater fauna in Switzerland. In the article, we show that, on the one hand, greater protection of groundwater is necessary and, on the other hand, monitoring of groundwater biodiversity in Switzerland must be stepped up. The article can be read in German online: https://www.aquaetgas.ch/wasser/gew%C3%A4sser/20251204-ag12-die-grundwasserfauna-sch%C3%BCtzen/