Ecological modelling and simulation is a field with an increased interest by the research community in order to foresee the evolution of ecosystems. Due to the strategic importance of coastal ecosystems, the management of these areas can and should take advantage of simulation tools and knowledge existing in the universities and research institutes to justify policy decisions in order to achieve sustainable development of these important natural resources. This book describes, in part, a study conducted in Portugal, incorporating models of coastal ecosystems, simulation, intelligent agents and decision support tools on a single platform to facilitate the management and decision-making on coastal areas.