International waters, also known as the high seas, refer to areas of the ocean that are not owned by any one country. These waters begin beyond the territorial sea, which extends up to 12 nautical miles from a nation's coastline. In international waters, all countries have the right to navigate, fish, and conduct research, but they must follow international laws. The United Nations Convention on the Law of the Sea (UNCLOS) governs activities in international waters. This treaty establishes guidelines for the use of the oceans, including the protection of marine life and the management of resources. It aims to balance the interests of different nations while ensuring sustainable use of the seas.