Exclusive economic zone of Japan
Japan has the eighth largest Exclusive Economic Zone (EEZ) in the world. The total area of Japan is about 377,973.89 km². Japan's EEZ area is vast and the territorial waters (including: the Seto Inland Sea) and EEZ together is about 4.48 million km².
Geography of Japan
The Geospatial Information Authority of Japan measures Japan's territory annually in order to continuously grasp the state of the national land. As of January 31, 2018 (Heisei 30) Japan's territory is . It increased in area due to the volcanic eruption activity of Nishinoshima (西之島) and the natural expansion of the island.