A turtle slowly paddles along the Amazon River. Suddenly, something from beneath the water bumps the turtle. The little reptile tries to swim faster. Then another bump—and, suddenly, the huge jaws of a bull shark close around the turtle. What is this ferocious ocean predator doing in the murky waters of a jungle river? Filled with information perfectly suited to the abilities and interests of its primary grade audience, this colorful, fact-filled book gives readers a chance to learn about the lives of these underwater hunters. The book will also help readers develop their powers of observation and challenge them with activities and critical-thinking questions about the shark's physical characteristics, its everyday life, and its hunting abilities.