Seen der Welt - Naturparadiese im Wandel: Welt der Extreme

Directed by Claudia Ruby

There are more than 100 million lakes in the world and their diversity is as large as this number. Lakes provide drinking water for millions of people and are considered a hotspot of life: almost half of all fish species live in fresh water. Some lakes have extreme conditions: they are saltier than the sea, toxic or hot.