Okinawa Churaumi Suizokukan and its giant Kuroshio tank
Published on 09/19/2026 at 22:18 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
Okinawa Churaumi Suizokukan in Motobu is a large public aquarium in Ocean Expo Park. Its defining feature is the Kuroshio Sea tank, a single, very large viewing space with whale sharks and manta rays.
The aquarium inside Ocean Expo Park
The aquarium stands within Ocean Expo Park on the Motobu Peninsula in northern Okinawa, on Japan’s main island of Okinawa. The park grew from the 1975 Okinawa International Ocean Exposition, which gives the site a clear historical setting.
The current aquarium opened on 1 November 2002. A formal opening date and the park setting place it firmly in the early twenty-first century, while the broader site links it to the Exposition of 1975.
The Kuroshio Sea as the central room
The Kuroshio Sea tank gives the aquarium its most recognisable interior. It holds 7,500 m³ of seawater and has a large acrylic viewing panel, with rows of seating facing the glass.
Whale sharks and manta rays pass through the tank alongside smaller fish from the Kuroshio region. The scale of the tank and the wide panel create a strong visual centre, and the aquarium’s own site gives the tank’s dimensions as 10 m deep, 35 m wide and 27 m long.
Marine galleries and a coastal setting
Okinawa Churaumi Suizokukan is not only about one basin. The galleries move through coral reef species, coastal life and deep-water displays before reaching the main tank.
The building sits in a coastal park beside the East China Sea, with the aquariums and walkways arranged over several levels. The broader setting keeps the place tied to the seascape of northern Okinawa, and the aquarium’s name joins the Okinawan word for beautiful and the Japanese word for sea.
Visiting Okinawa Churaumi Suizokukan: what travellers from Western Europe should know
- The aquarium is in Motobu, inside Ocean Expo Park on Okinawa’s northern coast. Road access runs through the Motobu Peninsula, and the park setting is shared with other marine and garden spaces.
- The building uses changes in level, indoor stairways and outdoor terraces. A visit involves moving through galleries that rise and fall around the main tank.
- The official language is Japanese and the currency is the 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.
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Frequently asked questions about Okinawa Churaumi Suizokukan
Where is Okinawa Churaumi Suizokukan?
It is in Motobu, in Ocean Expo Park on the Motobu Peninsula in northern Okinawa. The setting faces the East China Sea.
What does a visit focus on?
The main draw is the Kuroshio Sea tank, but the route also passes coral reef and coastal exhibits. The aquarium moves from smaller marine habitats to the large central basin.
What makes it distinctive?
The Kuroshio Sea tank is the place’s most memorable element, with whale sharks, manta rays and a large acrylic viewing panel. The building combines that central hall with a wider sequence of marine galleries.
