Think you know everything about sharks? More than four hundred species of sharks live in Earth's waters. Some grow larger than buses while others look like saws! Discover fun and interesting facts from where sharks live to how they hunt and more. Exploring the world is fun in the Unbelievable! Series-Part Of The UpDog Books™ collection. Learn entertaining facts about sports, nature, space, and much more. Then use what you learned to impress your friends and family!