Includes bibliographical references (page 46) and index.

Ocean dwellers -- A helpful head -- Social life -- Family ties -- Hard times for hammerheads.

Readers will find out how hammerheads hunt for food, socialize, and look for mates. They will also learn why hammerheads stay on the move constantly, why they are such good swimmers, and how they can sense small vibrations and electrical signals in the ocean.

Ages 9-12.

Grades 4-6.