Lagoons represent nearly 13% of the shoreline globally and around 5% in Europe. Coastal lagoons are shallow water bodies separated from the ocean by a barrier (e.g., narrow spit), connected at least intermittently to the ocean by one or more restricted inlets, and usually geographically oriented parallel to the shore-line. Coastal lagoons are flexible and usually able to cope with environmental change, yet nowadays they are under threat. This is partly due to climate change impacts (for example, sea-level rise and hydro-meteorological extreme events) but also due to more direct human activities and pressures. The book focuses on addressing these challenges through integrated management strategies seen in a land-sea and science-stakeholder-policy perspective. Pan-European management challenges are seen from the context of the perspectives of Policy, Environment and Modelling. Four case study lagoons in different geographical locations in Europe provide examples of some of the practical experiences and results around these challenges. Possible impacts on drainage basins and lagoons are introduced through integrated scenarios which were developed through a multi-science and land-lagoon science perspective combined with interactions and contributions from stakeholders and citizens. Issues around climate change impacts on environmental conditions in both drainage basins and lagoons are also included. The book derives from a collaborative EC-funded project entitled ''Integrated Water Resources and Coastal Zone Management in European Lagoons in the Context of Climate Change'' comprising nine partner institutes with a wide diversity in the scientific disciplines covered. Editors: Ana I. Lillebo, University of Aveiro, Portugal; Per Stalnacke, Bioforsk, Norwegian Institute for Agricultural and Environmental Research, Norway; Geoffrey D. Gooch, University of Dundee, Scotland, UK