The ocean is filled with giant, strange, and scary creatures such as whales, octopuses, and sharks—but the prehistoric megalodon was powerful enough to crush

Examines extinct species, including prehistoric man, and discusses why extinction happens, as well as how information is gathered on species that existed before

A companion volume to the 3-D "Sea Monsters" film reveals the terrifying predators that lurked in the underwater Cretaceous world, in a volume that also profile

All life — whether on land or in the sea — depends on the oceans for two things: • Oxygen. Most of Earth’s oxygen is produced by phytoplankton in the se

Discusses how twelve marine animals from around the world came to be endangered and the efforts that helped them to survive and thrive.