Seas & Oceans Surrounding Japan

Japan's Maritime Boundaries

Marginal Seas

• Sea of Japan (East Sea) – west
• East China Sea – southwest
• Philippine Sea – southeast
• Sea of Okhotsk – north

Ocean Basins

• North Pacific Ocean – east & south
• South Pacific Ocean – via Philippine Sea connection

Japan's exclusive economic zone (EEZ) spans these waters, supporting fisheries, trade routes, and strategic interests.