The Flood: Africa’s Okavango

The Okavango Delta lies in the heart of Southern Africa's largest desert. One of the most diverse habitats on Earth, each year it undergoes an epic transformation as desert is transformed into a water wonderland. For many animals, the floodwaters are a lifeline. For other inhabitants, they bring harsh challenges. But for all, life is ruled by the pulsing of Africa's great flood. (National Geographic)