While dinosaurs patrolled the lands, massive prehistoric sharks, giant scorpions and colossal squid cruised the ancient oceans - most with just one thing in mind: eat or be eaten. Full of captivating facts and more than thirty-five breathtaking pop-ups, this incredible companion volume to the bestselling "Encyclopedia Prehistorica: Dinosaurs" explores the prehistoric underwater world, where monsters ruled the waves for millions of years.

Robert Sabuda and Matthew Reinhart, illustrated by Robert Sabuda and Matthew Reinhart