"A National Georgraphic Channel global television event"--Cover.

Introduces animal migration and why some animals migrate, including the zebras in Botswana, the red crabs of Christmas Island, and the walruses in the Bering an

"Information about how animals build their homes, for beginner readers"--

Every year like clockwork, animals both big and small are driven by a natural instinct to move, in order to survive. On both land and sea, they fight the odds a

Whales.