This book reports about the results of a Special Symposium "The Baltic Sea Basin", held on August 11, 2008, within the frame of the 33rd IGC at Oslo, Norway in order to foster the understanding of the Baltic Basin as a unit in terms of genesis, structure, ongoing processes and utilization. It is the first time that in a joint publication, scientists from different disciplines give a comprehensive overview about the Baltic Sea basin in such a general sense. The book will be used not only by students and scientist but also by engineers and decision makers from industry and politics. Summarizing the state of the art in the investigation of the Baltic Sea Basin, but also in the resource utilisation of the basin the book will enhance the development of new monitoring strategies and technical device design including satellite observation methods, the establishment of international research laboratories, innovative topics for interdisciplinary research projects, etc.