Osaka Bay (大阪湾 ''Ōsaka-wan'' ) is a bay in western

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...

. As an eastern part of the

Seto Inland Sea The , sometimes shortened to the Inland Sea, is the body of water separating Honshū, Shikoku, and Kyūshū, three of the four main islands of Japan. It serves as a waterway connecting the Pacific Ocean to the Sea of Japan. It connects to ...

, it is separated from the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the conti ...

by the Kii Channel and from the neighbor western part of the Inland Sea by the Akashi Strait. Its western shore is formed by Awaji Island, and its northern and eastern shores are part of the

Kansai The or the , lies in the southern-central region of Japan's main island Honshu, Honshū. The region includes the Prefectures of Japan, prefectures of Nara Prefecture, Nara, Wakayama Prefecture, Wakayama, Kyoto Prefecture, Kyoto, Osaka Prefectur ...

metropolitan area A metropolitan area or metro is a region that consists of a densely populated urban agglomeration and its surrounding territories sharing industries, commercial areas, transport network, infrastructures and housing. A metro area usually ...

. Major ports on Osaka Bay include

Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of ...

Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whi ...

Nishinomiya 270px, Nishinomiya City Hall 270px, Aerial view of Nishinomiya city center 270px, Hirota Shrine is a city located in Hyōgo Prefecture, Japan. , the city had an estimated population of 484,368 in 218948 households and a population density ...

, Sakai,

Amagasaki 270px, Amagasaki Castle 270px, Aerial view of Amagasaki city center 270px, Amagasaki Station is an industrial city located in Hyōgo Prefecture, Japan. , the city had an estimated population of 455,555 in 223812 households, and a population ...

, and Hannan. A number of

artificial island An artificial island is an island that has been constructed by people rather than formed by natural means. Artificial islands may vary in size from small islets reclaimed solely to support a single pillar of a building or structure to those th ...

s have been created in Osaka Bay in past decades, including

Kansai International Airport Kansai International Airport ( ja, 関西国際空港, Kansai Kokusai Kūkō) commonly known as is the primary international airport in the Greater Osaka Area of Japan and the closest international airport to the cities of Osaka, Kyoto, and ...

Kobe Airport is an airport on an artificial island just off the coast of Kobe, south of Sannomiya StationAIS Japan
Port Island is an artificial island in Chuo-ku, Kobe, Japan. It was constructed between 1966-1980 (Phase 1) and 1987-2009 (Phase 2) at Port of Kobe, and officially opened with an exposition called " Portopia '81." It now houses a heliport, numerous h ...

, and

Rokkō Island is a man-made island in Higashinada-ku, Kobe, Hyōgo, Japan. It is located in the southeast region of the Port of Kobe. The island has a rectangular shape, and covers . The residential area of the island, featuring apartment buildings—man ...

. In antiquity, Osaka Bay stretched almost to Kyoto, Naniwa, Osaka's oldest settlement, itself a peninsula in the bay. Several islands at the south end of Osaka Bay are part of the

Seto Inland Sea National Park is a Japanese national park, comprising areas of Japan's Seto Inland Sea, and of ten bordering prefectures. Designated a national park in 1934, it has since been expanded several times. It contains about 3,000 islands, known as the Setouchi ...

. Industries locate around Osaka Bay because there is a skilled and plentiful workforce, many port facilities, efficient linkages (from small to medium to large firms). There are good transport links (including the

Shinkansen The , colloquially known in English as the bullet train, is a network of high-speed railway lines in Japan. Initially, it was built to connect distant Japanese regions with Tokyo, the capital, to aid economic growth and development. Beyond l ...

), room for expansion (land reclaimed from the sea), and a large local market (9 million). In a recent economic change in Osaka Bay, older 'heavy' industries such as

Nippon Steel was formed in 2012 by the merger of the old Nippon Steel and Sumitomo Metal. was established in 1970 by the merger of Fuji Iron & Steel and Yawata Iron & Steel. Nippon Steel is the world's third largest steel producer by volume as of 2019. ...

have declined, and 'new tech' companies such as ICT have expanded. There has been a growth in the quaternary industries — research, development, and information. There has also been a development in the science parks and the building of new motorways; this has meant the loss of the countryside. The

Tempozan Ferris Wheel Tempozan Ferris Wheel is a 112 meter tall ferris wheel located in Osaka, Japan, at Tempozan Harbor Village, next to Osaka Aquarium Kaiyukan, one of the largest aquariums in the world. The wheel has a height of and diameter of . Description Te ...

and

Osaka Aquarium Kaiyukan The is an aquarium located in the ward of Minato in Osaka, Osaka Prefecture, Japan, near Osaka Bay. When it first opened, it was the largest public aquarium in the world. It is a member of the Japanese Association of Zoos and Aquariums. The ...

are both located in the Tempozan Harbor Village area of Osaka.

Major ports

* Port of Kobe * Port of Osaka

Airports

Kobe Airport is an airport on an artificial island just off the coast of Kobe, south of Sannomiya StationAIS Japan
Seto Inland Sea The , sometimes shortened to the Inland Sea, is the body of water separating Honshū, Shikoku, and Kyūshū, three of the four main islands of Japan. It serves as a waterway connecting the Pacific Ocean to the Sea of Japan. It connects to ...

Bays of Japan Landforms of Osaka Prefecture {{Osaka-geo-stub