West Seto Sea

The western Seto Inland Sea reaches between Honshū, Shikoku and Kyūshū, opening towards the Pacific through the Bungo Channel. Its broad waters include Suō-nada and Iyo-nada. In Suō-nada the difference between high and low tide is great, though currents are comparatively gentle; farther east, water entering Iyo-nada from the Bungo Channel can flow swiftly. Islands and irregular shores divide this inland sea into many distinct reaches.