The coast is a zone of land and sea, growth and dwellings, and the receptacle of nuisances. It has become increasingly occupied under the 5th Republic in France. To explain the situation, the author analyses what is at stake for this exceptional space and the public policies concerning it. In spite of measures taken, like the Coastal conservatory and Coastal law to protect and balance this space, the dynamics of residential use and tourism, to the detriment of maritime and agricultural activities and social diversity are unrelenting. Sustainable development here requires an assertive political will which is currently lacking. The author provides a different way of looking at the shore.This book will interest students and teachers in life and earth sciences, social and political sciences and territorial planners, as well as maritime professionals, NGOs working to preserve nature and all those who want to know more about coastal issues.