What makes it 86% Couple-Friendly: The 5 PM Night Aquarium adds mood lighting and soft music for a romantic walk, but weekend crowds and many children slightly cut back on privacy and quiet moments.
Why 2-3 hours visit duration is ideal for couple trip: Allows time for the spiral tour, a special behind-the-scenes experience, and the Night Aquarium lighting
Night Aquarium:
Experience the aquarium after 5pm when lights and music create a ‘sea at night’ scene.
Tip: Arrive just before 5pm to secure a front-row view and avoid entry lines.
Marine Mates Premium Tour:
Join a 90-minute small-group tour for behind-the-scenes access and personalized animal presentations.
Tip: Reserve online or at the information counter by 9:30am on weekends to guarantee your spot.
Whale Shark Feeding Viewing:
Watch keepers feed whale sharks from above the Pacific Ocean tank.
Tip: Buy tickets on the day at least 30 minutes before the 10:15am or 2:45pm show.
Pacific Ocean Tank Spiral Ramp:
Walk the spiral ramp from the 8th to 4th floor for close-up views of whale sharks, manta rays, and hammerheads.
Tip: Start on the top floor to enjoy clearer views with fewer people around.
Maldives Zone Touch Pool:
Gently touch stingrays and small sharks under staff supervision.
Tip: Visit during early morning or late afternoon for a quieter, more relaxed experience.

Cody P
Kaiyukan is one of Japan’s biggest and best aquariums. We were impressed by the layout of this aquarium - you take the escalators up to the top and then you slowly work your way down in a circular motion around the main central tank, ensuring that you don’t miss anything and that the flow of people is smooth and organized. The crowds were tolerable - lots of people but not in a chaotic way. As you...
Tony Cheung
Amazing place, you start off at the top floor and work your way down, they have a massive central tank where you can see 2 huge whale sharks. Other side tanks have various other aquatic wildlife too. We went during the weekday and whilst it was busy, it wasn't unbearable. They have stamps for you to collect if that is your thing or for the kids to keep them entertained. Overall fantastic place, ...
Kristen King
Great way to spend a rainy (or sunny) day! I could spend all day watching the tank with the sharks and rays! The whale sharks were massive and there were so many different viewing spaces that it did not feel crowded at all! We got to watch the divers and the feedings! Fascinating to see the animals eating! The penguins and seals were very fun to watch playing around like little puppies! Highly rec...
Eber Shibin
The best aquarium I have been to. Aquatic life was very much a lot like what I have seen before in other places.. until I saw the whale shark and some super massive stingrays. That clearly topped anything I have seen before. The other major sell was effectively having a regular marker on the walkway giving you the distance remaining in your aquarium visit which really helps you plan ahead if you ...
Suphatcha Sriwongruk
This aquarium is one of the most popular in Japan, and I can see why—it’s well-presented and thoughtfully designed. While it’s not as large as I expected, both in terms of walking space and the size of the tanks, the exhibits are engaging and informative. Kinda sad for big living things living in such space. It feels especially well-suited for student field trips or families with kids. The locati...
Check for extended evening hours from spring to autumn and plan your visit after 5pm to catch the Night Aquarium ambiance.
Explore These Activities
| Item | Cost (Approx.) |
|---|---|
| Aquarium admission (2 adults) | JPY 4,800 |
| Marine Mates Premium Tour (2 guests) | JPY 2,000 |
| Whale Shark Feeding Viewing (2 guests) | JPY 5,000 |
| Total Estimated | JPY 11,800 |
Note: All prices are indicative and may vary. Please check directly with the venue for the most accurate and up-to-date information.
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Address: 1-chōme-1-10 Kaigandōri, Minato Ward, Osaka, 552-0022, Japan
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