Osaka Aquarium Kaiyukan Museum

Address: 1-1-10 Kaigandori, Minato Ward, Osaka 552-0022, Japan

Website: https://www.kaiyukan.com/

Hours: Daily 10am-8pm (hours and last-entry vary seasonally)

Admission: Adult 2,400 JPY (standard)

Osaka Aquarium Kaiyukan is a major public aquarium in Osaka’s harbour area, known for its large tanks and immersive displays representing Pacific Rim marine environments; it opened in 1990.

The exhibit design centers on a very large central Pacific Ocean tank viewed through multiple levels, surrounded by a ring of thematic tanks that interpret 15 or so distinct Pacific ecosystems. The site has been notable for exhibiting large pelagic species and for immersive walk-through circulation that brings visitors close to large displays.

Opened in 1990 as part of the Tempozan Harbour Village redevelopment, the aquarium was designed to showcase marine life from around the Pacific Rim and has hosted successive husbandry programs for large marine species.

The aquarium sits on Osaka Bay in the Tempozan area of Osaka, close to the port and other family-oriented attractions in the Minato Ward.

• Location and visiting tips: The aquarium is located at Tempozan Harbor Village in Osaka’s Minato Ward and is one of the world’s larger public aquaria by total tank volume; check feeding and presentation schedules for timed displays.

What to See#

• Pacific Ocean tank: The central Pacific Ocean tank is the aquarium’s signature exhibit, designed as a deep viewing column representing an open-ocean habitat and historically displayed large pelagic species.
• Themed habitat tanks: A sequence of tanks and habitats arranged around the central tank represents different Pacific Rim ecosystems from the Aleutian Islands to Antarctic waters.

Osaka Aquarium Kaiyukan is in the Tempozan/Osaka Bay area. Take the Osaka Metro Chuo Line to Osakako Station - the aquarium is about a 5-10 minute walk from the station. From JR Osaka Station take the Osaka Loop Line to Bentencho and change to the Chuo Line, or from Namba board the Chuo Line direct; from Kansai Airport you can reach Namba by train then transfer to the Chuo Line.

• Arrive just after opening or late afternoon and head directly to the Pacific Ocean (central) tank that holds the whale shark - doing the central tank early/first substantially reduces time spent in queues.
• Use Osakako Station (Chuo Line) and walk via Tempozan Harbor Village; the aquarium's main entrance is signed from the Tempozan Ferris Wheel area, which helps avoid the densest crowds at the marina.
• Buy timed-entry or combo tickets online ahead of weekends and school holidays; weekday late afternoons are typically quieter than mid-day.