The European Community and its member states have shared competences in marine environmental matters. As a consequence, they have jointly acceded to the United Nations Convention on the Law of the Sea (LOSC) and most marine-related international agreements, which have been concluded in form of “mixed agreements”. This book looks at the manner in which the Community implements its international obligations in the specific fields of the prevention of oil pollution from ships, the regulation of ocean dumping and the protection of marine habitats through the establishment of Marine Protected Areas (MPAs), especially looking at the division of competence with the member states and the conformity of the Community’s regulatory action with the jurisdictional framework established by the LOSC. By examining the subject from both a law of the sea and EC law perspectives, the books offers a comprehensive and interesting picture of the action taken by the Community to preserve the European marine environment.