Seto Inland Sea

Seto Inland Sea, also known as the Inland Sea is the body of water separating Honshu, Shikoku, and Kyushu, three of the main islands of Japan

It serves as an international watercourse, linking the Pacific Ocean to the Sea of JapanIt connects to Osaka Bay and gives a sea transport link to industrial centers in the Kansai region, including Osaka and KobeBefore constructing the Sanyo Main Railroad Line, it was the main transportation link between Kansai and Kyushu

Yamaguchi, Kagawa, Ehime, Hiroshima, Okayama, Hyogo, Fukuoka, and Oita prefectures all have coastlines on the Inland Sea; Hiroshima, Iwakuni, Takamatsu, and Matsuyama are the other cities located on it


The Sea has the moderate climate, with a stable year-round temperature and relatively low rainfall levels; therefore the area is also called as "the land of fair weather"The sea is also well-known for its periodic red tides caused by solid groupings of certain phytoplankton that result in the death of large numbers of fish

Geographical features

The Inland Sea is about 450 km (280 mi) long from east to westThe width of the Sea from south to north varies from 15 to 55 km (9.3 to 34 mi)In most places, the water is relatively shallowThe average depth is about 37.3 m (122 ft); the greatest depth of the Sea is 105 m (344 ft)

The eastern part of the Inland Sea is connected to the Kii Channel (connects to the Pacific Ocean) by Naruto StraitThe western part of the Inland Sea is connected to the Sea of Japan through the Kanmon Straits and to the Pacific through the Bungo Channel


There are about 3,000 islands located in the Inland Sea, among them the larger islands are Awajishima and ShodoshimaMost of the smaller islands are uninhabited


More than 500 marine species are live in the Inland SeaExamples are the ayu, an amphidromous fish, the horseshoe crab, the finless porpoise, and the great white shark, which also occasionally attacks people in the Inland Sea

List of Seas in Pacific Ocean

Major ports and harbours in Pacific Ocean