Increasing global mean temperature will have numerous effects on global oceanographic conditions. Sea level rise is one of those that are believed to become the major factor for worldwide coastal recession as it was occurred on many archipelagic and coastal states. Dealing with this phenomenon, a spatial shoreline retreat model was developed to predict the future impact of sea level rise on coastal area, physically, ecologically and economically. A system and dynamic approach was also embedded in the model in order to simulate the best sustainable options for many decision makers in managing the nature. Thoughtfully, this book provides the creation of the shoreline retreat model based on ecological and economical approach. The projection and simulation that were illustrated in this book will inspire us in how we have to do to have a better future plan in harmonizing the human social economic life in sense of balance with the nature. So, we will support the world to mitigate the increasing global mean temperature and also the degradation of world heritage of natural resources biodiversity.