Book excerpt: There is beautiful mathematics in the natural world. In this book children take a walk on the beach in search of interesting treasures. Colourful photos and an easy to access text invite both children and adults to explore the wonders of the tropical world. On each page a guiding question in the narrative asks readers to uncover the math and science behind each photo. This book can spark mathematical conversations with children, and be used as a guide for discovering the rich math that exists in nature. Read it before venturing out on a beach adventure, or when you desire an escape from reality. Photos can also be used to engage children in math talks as they observe and discuss what they see. Mathematical facts for each photo are provided at the end of the book that can be used to prompt readers in learning more about how math shapes our natural world.