"The fish goes ashore, the flippers turn into feet."

"I'm reading zoology again," wrote Johann Peter Hebel to his friend Carl Christian Gmelin in 1796. While Gmelin was away due to the war, Hebel was looking after collections and teaching in Karlsruhe - and developed his very own "plan", an unusual approach to zoology. The lecture explores this plan and places it in the upheaval of the late 18th century, when the Bible, observation of nature, collecting and systematization came together in a new way and the modern natural sciences emerged.