How to divide the exclusive economic zone? How far from the coastline?

The exclusive economic zone is a new system established at the Third United Nations Conference on the Law of the Sea (EEZ). The exclusive economic zone refers to an area 200 nautical miles from the measured territorial sea baseline, outside the territorial sea and adjacent to the territorial sea. Coastal states in this area enjoy sovereign rights and other jurisdiction over their natural resources, while other states enjoy freedom of navigation and overflight. However, such freedoms should take due account of the rights and obligations of coastal states and comply with the provisions of the United Nations laws and regulations established by the provisions of the Convention on the Law of the Sea and other rules of international law. The exclusive economic zone refers to an exclusive jurisdictional area established by a coastal state in the sea areas adjacent to its territorial sea outside its territorial sea. Within this area the coastal State has sovereign rights for the purposes of exploration, development, conservation and management of the natural resources of the seabed and subsoil and the waters above them. In addition, coastal states also have jurisdiction over marine scientific research and marine environmental protection in their exclusive economic zones. The exclusive economic zone shall not exceed 200 nautical miles from the baseline from which the width of the territorial sea is measured. According to the 1982 United Nations Convention on the Law of the Sea, coastal states have the following rights in their exclusive economic zones: sovereign rights to explore and develop, conserve and manage natural resources on the seabed and subsoil and overlying waters; use seawater, currents and wind for production Sovereign rights in energy, etc.; jurisdiction over the construction and use of artificial islands, conducting marine scientific research and protecting the marine environment. Other countries still enjoy the freedom of navigation and overflight within the exclusive economic zone, the freedom to lay submarine cables and pipelines, and other purposes consistent with international law related to these freedoms. Coastal states enjoy exclusive jurisdiction over fisheries within their exclusive economic zones. It can stipulate the allowable catch amount of biological resources in the exclusive economic zone, as well as other management and conservation measures. The legislation of various countries regarding exclusive economic zones generally stipulates that foreign fishing vessels are not allowed to fish in the zone without permission. Some national legislation stipulates in detail the species and quantity of fish allowed to be caught in the area, as well as the size of the mesh that can be used, in order to conserve biological resources. According to the provisions of the United Nations Convention on the Law of the Sea, if a coastal state does not have the ability to catch the entire allowable catch, it should, through agreements or other arrangements, allow other countries to catch the remaining portion of the allowable catch, especially landlocked countries in the same area and geographically disadvantaged countries. The state participates in fishing. The United Nations Convention on the Law of the Sea stipulates that “the limits of the exclusive economic zone between countries with opposite or adjacent coasts shall be delimited by agreement on the basis of international law referred to in Article 38 of the Statute of the International Court of Justice in order to achieve a fair settlement.” Some countries' legislation on exclusive economic zones stipulates that when the distance from the baseline of its territorial sea to the median line with neighboring countries is less than 200 nautical miles, the scope of its exclusive economic zone ends at the median line. Some countries also stipulate that when their economic zone overlaps with the economic zones of other countries, the boundaries of the exclusive economic zone shall be determined through consultations between the countries concerned.