The Association pour la Sauvegarde du Léman (Association for the Protection of Lake Geneva) is offering the chance to put on your boots and set off on a fifteen-minute walk through the forest to discover the small animals that inhabit our rivers. Using strainers and spoons, we'll catch the little inhabitants of the waterways and then observe them with binocular magnifying glasses. The importance of these small living creatures and the risks they face from the artificialization of rivers, pollution and invasive exotic species will also be discussed.