A moray eel pokes its head out of an undersea cave just as some brightly colored fish swim by. With lightning speed, the moray grabs one of the fish with its curved, needle-like teeth! Then, in a flash, it disappears into its cave to eat its meal undisturbed. Young readers will explore the underwater world of these strange fish through clear text, full-color photos, and diagrams. Age-appropriate activities, such as matching descriptions of various moray eels to pictures of the fish, give readers a chance to make observations and develop key animal-science skills.