The law of the sea has over the past fifty to sixty years changed the legal map of the world. Enormous maritime and subsea areas, previously subject to the freedom of the high seas, are today part of national States' exclusive jurisdiction and control – a legal development which indeed has been to the benefit of large coastal States, including Norway.This book focuses on the extent to which the development of the law of the sea has affected Norway and its legislation, emphasizing on the following areas: the establishment of maritime zones; delimitation between Norway and neighboring States regarding continental shelf areas and other maritime zones, for example in the North Sea and the Barents Sea; and the international legal status of the maritime zones adjacent to the Svalbard archipelago. In addition, key issues regarding marine environmental protection is presented and discussed.