As the wildebeest migration approaches the river, they know there is danger lurking in the water. Nile crocodiles move towards the herd's crossing points at this time of year and wait for the big arrival.
For more than a quarter-century, NATURE has brought the beauty and wonder of the natural world into American homes, becoming in the process the benchmark of natural history programs on television. Watch Wednesdays, 8/7c.
Dozens of your favorite THIRTEEN and PBS programs are available to watch on-demand on many popular platforms.
LIVE