Lake Life – Secrets Beneath the Surface

This episodes takes viewers on an exciting journey to the lakes of the Alps, Upper Austria, and the northern foothills of the Alps. From the Frillensee, Germany's coldest swimming lake, to the vast depths of Lake Constance, the documentary uncovers the hidden underwater worlds of these lakes. Using underwater cameras and drones, divers capture unique footage of both animal life and surprising remnants of human civilization. The film explores the geological and zoological wonders of each lake, showcasing rare species like the mysterious crustaceans of a disappearing lake, sulfur-eating creatures, and the spawning grounds of mighty pikes, colorful sticklebacks, and the ancient burbot.

This episode introduces the most beautiful lakes in northern Germany, from the Müritz to the volcanic crater lakes in the Eifel. Underwater cameras and drones capture stunning footage of hidden aquatic life and historical remnants. The documentary delves into the creation of these lakes and their role in the surrounding flat landscapes. It highlights lakes shaped by ice ages and human hands, many of which are wildlife paradises. Stories include the courtship rituals of bitterlings, and the bubbling gases beneath the Eifel's volcanic lakes.