Jenn and her brother, Hal, live with their family on the coast of Maine. One day, Jenn looks out over the water and sees a giant fin. She's never seen a fin so big! What could be swimming in the water? Soon, Jenn learns about a giant shark that lived long ago called the megalodon. Scientists say megalodons died out. But some people think they are still alive! Is that what has been lurking near the coast? Jenn sets out to solve the mystery. Will her dangerous search be worth it? With an intriguing story perfect for students in grades 4-6 and text at an achievable 2nd grade level, this book in the Cryptid Hunt series will draw in reluctant and striving readers who need support and practice to improve reading proficiency.