Participants learn about the different types of standing and flowing waters and their distinct characteristics. The emphasis is on highlighting the differences between natural water systems and systems that have been changed through urbanization, with a focus on biodiversity and on the overall quality of water. Participants also learn about measures which can be taken to improve and recover damaged structures of aquatic ecosystem.

Rousing rivers, quaint creeks, bombastic lakes and mossy ponds: Aquatic habitats are numerous and diverse in many different ways. As such, flora and fauna within such diverse environments are naturally also affected, and consequently highly diverse as well. Some plants specifically need shallow coastlines to flourish. Some animals thrive only at the bottom of a deep lake. Hence, waters provide a wide variety of habitats, containing a myriad of animals and plant life.

The aim of this module is to learn about biodiversity in aquatic habitats. This is achieved by conducting first-hand research of the topic of water at the research station Eußerthal.

This module deals with environmental issues due to soil erosion at the edge of flowing waters. It explains the causes of soil erosion and outlines preventive measures that can be taken to  protect and safeguard aquatic ecosystems.

Participants learn how to assess the overall state of river ecosystems by examining numerous characteristics, such as conditions along the coast as well as possible wetlands at the research facility Eußerthal. Additionally, children learn about macrozoobenthos and how to identify its inhabitants as well as taking samples of the environment.

Through examination of the macrozoobenthos community, one can draw conclusions about the ecological quality of flowing waters. Using this data, children learn how to analyze the current conditions and discuss their results together within their group.