yes it does separate these two islands in japan
Inland Sea, is the body of water separating Honshū, Shikoku, and Kyūshū, three of the main islands of Japan. It serves as an international waterway, connecting the Pacific Ocean to the Sea of Japan.
AWESOME! Mountains, rivers, rice fields, the sea...Shikoku is GREAT!
It Provides Food and Trade Routes
it has 4 Japan has 4 MAIN islands, (Honshu, Hokkaido, Kyushu, and Shikoku) but Japan actually has over 1000 islands. Only around 30 or more of those islands have citizens. Other islands include Okinawa, Bonin islands, and the Ryuku Islands
the inland sea
The same as most nations use the waterways; transportation of goods & trade.
Honshu is the main and the largest island in Japan. Located in the south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Strait.
Red Sea (Cataract near the peninsula)
The Red Sea, also at Hiksonian River, and a cataract at the Japan Peninsula.
Japan was an Island Empire, and then, as now moved about by sea-going vessels. Japan's route's of trade are the 7 seas.
it is the sea of japan witch leads into the pacific answer