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.
Okinotorishima
Japan claims an EEZ over 400,000 square km (154,500 square miles) around Okinotorishima. China and South Korea dispute this claim in their addenda to the CLCS, saying the area only consists of rocks and not islands. Neither China nor South Korea have territorial claims regarding Okinotorishima, but foreign policy analysts speculated that it wants to "investigate the surrounding seabed for submarine operations in case of military conflict involving the Republic of China (Taiwan)." Japan claims that rock is not defined in the Convention. Besides, the construction of port, lighthouse and power station may be used as a counterargument for PRC's claim regarding "sustain human habitation or economic life".