Osaka Aquarium Kaiyukan
Good to know before you go
- Getting there
- Osakako Station · 5 min walk (Osaka Metro Chūō Line)
- Hours
- 10:30–20:00 (weekdays), 9:30–20:00 (weekends); final entry 19:00 (hours vary by season)
- Admission
- ¥2,800–¥3,500 (adults 16+), ¥1,400–¥1,800 (ages 7–15), ¥700–¥900 (ages 3–6); dynamic pricing applies
- Time needed
- 90–120 min
- Best time to go
- After 17:00 on weekdays when lighting and music shift to the 'Night Aquarium' format and tour groups have left
Hours can change on holidays — check the official site before travelling.
About
As one of the world's largest public aquariums, Kaiyukan is famous for its stunning, multi-level design that spirals down around a massive central tank housing two incredible whale sharks. You will journey through beautifully recreated Pacific Rim habitats, from the icy Antarctic to vibrant tropical reefs. It is an absolute must-visit for families and marine life enthusiasts looking for a world-class, immersive experience.
What Japanese guides note
Visitors begin on the eighth floor and descend gradually along a continuous spiral ramp that wraps around the nine-meter-deep Pacific Ocean tank. Peak congestion occurs between 10:30 and 14:00 when school excursions and tour groups arrive, making visits after 17:00 significantly quieter. Luggage larger than small carry-on dimensions is prohibited inside and must be stored in exterior lockers before passing the ticket gates.
Details from local sources
- Same-day re-entry stamps are no longer offered, meaning visitors cannot leave the facility to dine or shop outside and return on the same ticket. [source]
- The facility does not stage dolphin or sea lion performance shows in order to present animals in conditions close to their natural habitats. [source]
- Every evening starting at 17:00, interior illumination dims and the musical soundtrack changes to simulate a moonlit marine environment. [source]
- The aquarium officially advises visitors to leave strollers at the entrance and carry infants, as low stroller seat angles block views into the main exhibit tanks. [source]
Insider Tip
Buy tickets online in advance to bypass the massive ticket-window lines, and aim to visit after 5 PM to see the romantic night lighting.
Frequently asked
Can I leave Kaiyukan to eat or shop and re-enter later?
No, Kaiyukan does not permit re-entry. Once you exit through the turnstiles into the marketplace or open plaza, your ticket is invalidated. However, you are permitted to backtrack through the internal spiral exhibits and view the tanks multiple times before you pass the exit doors.
Are there scheduled dolphin or sea lion shows at Kaiyukan?
No, Kaiyukan intentionally avoids performance-style entertainment shows like jumping tricks. Instead, visitors can observe scheduled feeding sessions throughout the day, during which trainers conduct medical husbandry training, such as taking body temperatures and health checks, in full view of the public without theatrical choreography.
Do I need to reserve an entry time in advance?
While same-day tickets are sold at the counter if capacity permits, Kaiyukan restricts visitor numbers into 15-minute time slots. During weekends and peak holiday periods, on-site entry windows can sell out hours ahead, so purchasing an official online e-ticket in advance is strongly recommended.
How long does a typical walkthrough of the aquarium take?
Most visitors spend between 90 and 120 minutes completing the full spiral circuit around the main Pacific Ocean tank. If you plan to stop for feedings, sit at the observation benches, or browse the official museum gift shops, budget approximately two to two and a half hours.
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On the same walk
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