This first glimpse into the world of fish explains the basic characteristics that all fish share, while offering a look into the wide variety of animals that fall into this diverse category.Elementary school teacher and author Cathryn Sill and her husband, noted wildlife illustrator John Sill, team up again to offer young readers another first glimpse into our natural world in the latest book in the acclaimed About? series.In simple, easy-to-understand language children learn the basic characteristics of what fish are, how they swim, breathe, and reproduce, and the different ways they protect themselves from predators. The beautifully detailed, full-color illustrations reflect the diversity of the fish population-from an Arctic char to a Porcupine fish-and present each in its natural underwater habitat. An afterword, which provides further details on the fish portrayed, will inspire young readers to learn more.