From the standpoint of international law, the waters of the earth are divided into:
Inland or Internal Waters - they are the parts of the sea within the land territory. They are considered in the same light as rivers, canals, and lakes within the land territory of a state. They are sometimes called national waters.
Territorial Sea (supra) - it is belt of water outside and parallel to the coastline or to the outer limits of the inland or internal waters.
High or Open Seas - they are waters that lie seaward of the territorial sea.