Together we'll be researching for the future of our freshwaters!
![](/sites/default/files/styles/gallery_in_content/public/media-images/gallery-items/Stoerbesatz%20%28c%29%20Philipp%20Freudenberg_0.jpg?itok=rCCrU0mZ)
How old do sturgeons get? | Photo: Philipp Freudenberg
What have fish and trees in common? | Photo: Katharina Bunk
What's to discover underneath the water surface? | Photo: Katharina Bunk