Perhaps the most famous animal migration is the journey of Africa's wildebeest herds, which travel annually by the millions in search of greener pastures.
The wildebeest do not travel alone. As many as 200,000 zebra and 500,000 gazelles also make the journey, followed by some of the savanna's top predators. The migration is one of nature's grandest spectacles, as the herds cross crocodile-infested rivers while lions prowl in the tall grass nearby.
Africa's vast savanna could not exist without the migration, and maintaining these habitat corridors is essential to the survival of this area and its creatures.