The water's fine! Come on in! But wait—there are sharks in it! Would you swim with sharks? Many people do! Marine biologists swim with sharks to learn more about these top predators. Snorkelers witness whale sharks and spy spotted leopard sharks. Some thrill-seekers even cage dive to get face-to-face with the giant toothy jaws of great whites! Readers will find out how scientists and adventurers alike are getting up close to all kinds of shark species and what they are discovering.