All aboard the dolphin watch boat! Young readers looking for an adventure on the seas will find that this 'Animal Planet Chapter Book' is just the ticket. Information on dolphins' anatomy, evolution, species, behaviour, social relationships and more offer a complete survey of this high-interest topic for young readers. 'Dolphins!' gives you the scoop on how dolphins live, eat and interact with each other. It will even tell you how dolphins play a role in the U.S. Navy and sleep with half of their brains turned off. More than 100 photos showcase dolphins in this memorable book for fans of charismatic cetaceans.