Shark Watch!- Watch!: Movement with Purpose

Sharks are built to move. Shaped like torpedoes, sharks use their tails and fins to speed through the water. They need to move to breathe, to keep from sinking, to catch their prey, and to migrate. Inside this book, you'll find out how a shark's body shape, tail, and fins all work together to help a shark move. Because for most sharks, moving isn't a choice ... they must move or die!