This book is above all the result of a real «scientific show» led by the trio Éric Chaumillon, Mathieu Duméry and Guillaume Bouzard. During strong and original conferences, they expose their crossed views on the great mysteries of coastal erosion: the scientific discourse is enhanced with humor, all coming to life in funny and effective drawings. This project gave birth to this book. It is an indispensable tool in today’s world to understand the causes of coastal erosion, but also to measure the impact that climate variations or human activity can have on this phenomenon. The reader is invited to discover the different factors responsible for the vulnerability of these areas and to consider the options available to adapt to these changes. All of this is done through a content rich in anecdotes and humorous drawings that brilliantly put the scientific richness of the text into perspective!