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.
Bōsō Peninsula
The is a peninsula that encompasses the entirety of Chiba Prefecture on Honshu, the largest island of Japan. It forms the eastern edge of Tokyo Bay, separating it from the Pacific Ocean. The peninsula covers approximately .