This edited volume offers a multidisciplinary analysis of current approaches and challenges to the sustainable governance of Europe's marine environment. Structured in three parts, Part I outlines general theoretical ideas about governance, governing, and governability and serves as a starting point for analysing the development of marine governance in Europe. Part II includes studies of EU marine governance. Part III focuses on Europe's regional seas, namely the Baltic Sea, the North Sea, the Black Sea, and the Mediterranean Sea.