Okinawa Churaumi Suizokukan and the vast Kuroshio Sea
Published on 09/22/2026 at 06:20 | Editorial responsibility: Rafael MĂĽller, Editor-in-Chief AD HOC NEWS
Okinawa Churaumi Suizokukan in Motobu is arranged around the Kuroshio Sea tank, where whale sharks, manta rays and schooling fish share a vast underwater scene. The aquarium opened on 1 November 2002 inside Ocean Expo Park, linking a large public display with Okinawa’s coral reefs, warm current and deep sea.
Okinawa Churaumi Suizokukan and its immense Kuroshio Sea
The Kuroshio Sea holds 7,500 mÂł of water. Its main viewing panel measures 8.2 by 22.5 metres and has a thickness of 60 centimetres, placing a broad section of the tank directly before visitors.
The tank is 35 metres long, 27 metres wide and 10 metres deep. Whale sharks occupy the water with manta rays and many smaller fish, creating a display built around differences in scale, movement and depth.
The tank’s dimensions are recorded in the facility data. The open view also reveals the aquarium’s central idea: Okinawa’s marine world is presented through connected habitats rather than a single species display.
From coral reefs to Okinawa’s deep sea
The aquarium’s route moves through several marine environments. A naturally lit Coral Sea tank presents coral reef life, followed by the Kuroshio Sea tank and an area devoted to the deep sea.
The building has four storeys and contains 75 exhibition tanks. Its displays follow a vertical sequence, from a coral reef journey on the upper levels to a deep-sea journey on the lowest level.
Okinawa’s surrounding waters are represented through three linked settings: the Kuroshio warm current, coral reefs and the deep sea east and west of the Southwest Islands. The recreated environments extend from the surface to a depth of around 700 metres.
The name combines two Okinawan words: “chura” means beautiful and “umi” means sea. The present aquarium opened in November 2002, after the earlier aquarium at Ocean Expo Park closed in August of that year.
Yukifusa Kokuba’s aquarium in Ocean Expo Park
The present building was designed by Okinawan architect Yukifusa Kokuba. It stands within Ocean Expo Park, a public park created after the 1975 Okinawa International Ocean Expo in Motobu.
The park became a National Park region in 1976. The aquarium remains connected to that setting through its focus on the marine life of Okinawa, including reef fish, sharks, rays and deep-sea species.
Seawater for the facility is drawn from offshore at a depth of 20 metres. The aquarium has a total water volume of approximately 10,000 mÂł, with the Kuroshio Sea forming its largest tank.
The aquarium’s marine area guide places the exhibits within a progression from coral reef to open ocean and deep water. Research and conservation work accompany the public displays, including the rescue and release of weakened marine animals.
Visiting Okinawa Churaumi Suizokukan: what travellers from Western Europe should know
- Okinawa Churaumi Suizokukan is in Motobu Town, on the grounds of Ocean Expo Park in Okinawa Prefecture. It can be reached by car, express bus, local bus or taxi.
- The address is 424 Ishikawa, Motobu-cho, Kunigami-gun, Okinawa Prefecture. Ocean Expo Park provides the parking areas associated with the aquarium.
- The building’s exhibits are arranged across four storeys. The route includes upper coral-reef displays and lower galleries devoted to the deep sea.
- The official language is Japanese and the currency is the Japanese yen.
- Entry requirements depend on your nationality; UK travellers can check the FCDO travel advice at gov.uk/foreign-travel-advice, Irish travellers the Department of Foreign Affairs at ireland.ie.
Searching for Okinawa Churaumi Suizokukan on social platforms
These links open searches for Okinawa Churaumi Suizokukan on each platform.Frequently asked questions about Okinawa Churaumi Suizokukan
Where is Okinawa Churaumi Suizokukan?
It is in Motobu Town, Okinawa Prefecture, within Ocean Expo Park on Okinawa Island.
What can visitors see inside?
The displays cover coral reefs, the Kuroshio current and Okinawa’s deep sea. The Kuroshio Sea tank contains whale sharks, manta rays and smaller schooling fish.
What makes the aquarium distinctive?
Its central tank holds 7,500 mÂł of water behind an acrylic panel measuring 8.2 by 22.5 metres. The surrounding route extends that large display into a wider sequence of Okinawan marine habitats.
