{{Other uses|Setouchi (disambiguation){{!}}Setouchi}} {{more citations needed|date=June 2017}}
{{Infobox settlement <!-- See Template:Infobox settlement for additional fields and descriptions --> | name = Setouchi region | native_name = 瀬戸内地方 | native_name_lang = ja | settlement_type = Region | image_skyline = Seto_Inland_Sea_satellite.jpg | image_alt = | image_caption = The Setouchi region in Japan | image_map = | map_alt = | map_caption = | pushpin_map = | pushpin_label_position = | pushpin_map_alt = | pushpin_map_caption = | coordinates = | coor_pinpoint = | coordinates_footnotes = | subdivision_type = Country | subdivision_name = Japan | unit_pref = Metric<!-- or US or UK --> | area_footnotes = | area_total_km2 = 29,259.08 | area_land_km2 = | area_water_km2 = | area_water_percent = | area_note = | elevation_footnotes = | elevation_m = | population_footnotes =<ref name=population>{{cite web |url=http://www.stat.go.jp/data/kokusei/2010/kihon1/pdf/gaiyou2.pdf |title=平成 22 年国勢調査の概要 |author=Ministry of Internal Affairs and Communications Statistics Bureau |date=26 October 2011 |accessdate=6 May 2012}}</ref> | population_total =8,495,907 | population_as_of =10 October 2016 | population_density_km2 =290.4 | population_est = | pop_est_as_of = | population_demonym = | population_note = | timezone1 = JST | utc_offset1 = +9 | footnotes = }}
The {{nihongo|'''Setouchi region'''|瀬戸内地方|Setouchi chihō}}, or simply '''Setouchi''', is a geographic region of Japan. Setouchi includes the Seto Inland Sea and the adjacent coastal areas of Honshū, Shikoku, and Kyūshū, three of the four main islands of Japan.
Yamaguchi, Hiroshima, Okayama, Hyōgo, Osaka, Kagawa, Ehime, Fukuoka, and Ōita prefectures all have coastlines in Setouchi; the cities of Hiroshima, Iwakuni, Takamatsu, and Matsuyama are also located within the region.
== History == Since the 1980s, the sea's northern and southern shores have been connected by the three routes of the Honshū–Shikoku Bridge Project, including the Great Seto Bridge, which serves both railroad and automobile traffic.
== Geography == The Setouchi region is known for its moderate climate, with a stable year-round temperature and relatively low rainfall levels. The sea is also famous for its periodic {{nihongo|red tides|赤潮|akashio}} caused by dense aggregations of certain phytoplankton that result in the deaths of large numbers of fish.
== See also == * Seto Inland Sea * Great Seto Bridge * Setouchi, Okayama * Nishiseto Expressway *STU48
==References== {{Reflist}}
== External links == * [https://setouchitrip.com/ Setouchi - English Travel] - Setouchi Trip * [http://www.jnto.go.jp/eng/location/routes/rtp/setouchi/ Setouchi] - JNTO * [http://setouchi-artfest.jp/en/ Setouchi Art Festival] * [http://www.japan-guide.com/e/e5410.html Setouchi Art Festival] - Japan Guide
{{Regions and administrative divisions of Japan}} {{Japan topics}}
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Category:Regions of Japan Category:Landforms of Ehime Prefecture Category:Landforms of Yamaguchi Prefecture Category:Landforms of Hiroshima Prefecture Category:Landforms of Okayama Prefecture Category:Landforms of Hyōgo Prefecture Category:Landforms of Fukuoka Prefecture Category:Landforms of Ōita Prefecture Category:Landforms of Kagawa Prefecture