One reason at least, as the writer of this study tries to show, is that the Baltic Sea has to a great extent formed a “microcosms” reflecting the changing priniciples of the law of the sea. Thus the classic terms of the law of the sea such as “mare liberum”, “freedom of fishing”, “conservation”, “growing interests of the coastal states”, “exclusive fisheries zones” are all relevant to the Baltic Sea. The legal aspects of the Baltic Sea fisheries pose questions, also, which concern the general theory of international law, such as the law of treaties (both bilateral and multilateral agreements), the relationship between international law and muncipal law (the resolutions of international organization and muncipal law) and the law relating to international organizations (in particular the role of resolutions of international organizations in the law making process).