Fish are unlike any other type of animal. What makes them do the things they do? This unique volume will answer that and other questions curious minds might have about their fishy friends. Eels, sea horses, and lungfish are just a few of the underwater creatures readers will learn about in this original book. A brief introduction summarizing each fish is followed by a simple diagram showing the inside parts of the animal. Each diagram includes labels and captions that help readers understand the key workings of the animal's body. Learning life science has never been so much fun.