Wildebeest and Zebra - Africa's most famous drifters. Hundreds of thousands of zebra live together in the Serengeti. Their distinctive eye-catching stripes are as unique as fingerprints and even within the largest of gatherings no two zebra will be found with exactly the same stripes. Turtles that make epic journeys to reproduce. The most abundant sea turtle in the world, Olive Ridleys' have extraordinary nesting habits. These small turtles migrate massive distances between their oceanic feeding grounds and the shores that draw them back to mate, and then to nest. Sooty Tern - Sea birds that don't come to land for years. Like the turtle, once it has left land for the first time, a young Sooty Tern may not go back for years, spending all its time in the ocean skies until it is time for it to breed.