The Olifants River nourishes the unique Cape Floral Kingdom, home to 3% of global plant species.
Kenya's Mara River becomes a battleground in the dry months when hordes of wildebeests risk it all to cross.
A majestic river in Africa's Rift Valley turns the barren Luangwa Valley into a lush oasis for animals.
Exploring Namibia's Hoanib River, which lies hidden under the sand, providing water in the desert for most of the year.