Lake Life: Secrets Beneath the Surface

From Germany's frigid Frillensee to the vast depths of Lake Constance journey into the hidden underwater worlds of Alpine lakes shaped by ice and time. Divers drones and underwater cameras reveal rare crustaceans sulfur-eating bacteria ancient fish and sunken traces of human life.

From Ice Age relics to volcanic lakes in the Eifel dive into northern Germany's unique aquatic worlds. Underwater views reveal mating rituals bubbling gases and lakes formed by glaciers time and human hands-now sanctuaries for rare species.