You’re planning a trip to Osaka, and there it is on every travel guide — the Kaiyukan Aquarium, one of the largest and most spectacular aquariums in the world.
You picture giant tanks filled with gliding whale sharks, shimmering schools of fish, and glowing jellyfish. But before you go, one question always pops up: how much does it cost?
Don’t worry — you’re in the right place.
In this guide, we’ll cover everything you need to know about the Kaiyukan Aquarium’s ticket prices, opening hours, discounts, and travel tips.
Whether you’re visiting with family, a partner, or solo, you’ll find out exactly how to enjoy this ocean wonderland without breaking the bank.
By the end, you’ll know not only what to expect at Kaiyukan but also how to make the most of your visit — from the best time to go to the hidden spots you shouldn’t miss.
Let’s start with a quick look at why this aquarium is such a beloved landmark in Japan.
What Is Kaiyukan Aquarium and Why Is It So Popular?
Located in Osaka’s Tempozan Harbor Village, the Kaiyukan Aquarium (海遊館) isn’t just another aquarium — it’s one of the largest in the world, designed to take you on a deep-sea journey through the Pacific Ocean.
Its name “Kaiyukan” literally means to play with the sea, and that’s exactly what it delivers — an immersive, multi-sensory experience for visitors of all ages.
A Journey Through the Pacific Ocean
The Kaiyukan is built around a stunning central tank that represents the Pacific Ocean, home to its most famous resident: the whale shark, affectionately known as “the gentle giant.”
As you descend through the spiraling walkway, you’ll move through more than 15 carefully designed marine zones, including the Japan Forest, Antarctic, Great Barrier Reef, and Deep Sea exhibits.
Each level lets you view marine life from a different depth, creating the sensation of diving deeper into the ocean as you walk.
From playful otters and penguins to mesmerizing manta rays, every turn reveals a new underwater world.
A Global Icon of Aquarium Design
Since its opening in 1990, Kaiyukan has become a symbol of modern aquarium architecture and environmental education.
Unlike traditional aquariums where visitors move from tank to tank, here you follow a continuous route that circles one massive central tank — giving you the feeling of moving alongside the creatures themselves.
The lighting, music, and temperature all change subtly between areas, matching the environment of each region.
This attention to detail makes the visit feel less like a museum trip and more like an ocean voyage.
Perfect for Families, Couples, and Solo Travelers
Kaiyukan isn’t just for kids — it’s a place that captures everyone’s imagination.
Families love watching the playful dolphins and sea lions; couples enjoy the quiet beauty of the glowing jellyfish tunnel; and solo travelers find peace in the soft rhythm of the marine world.
The aquarium is also fully accessible for wheelchairs and strollers, making it an inclusive destination for all visitors.
A Must-See Osaka Landmark
Situated near the Osaka Bay waterfront, Kaiyukan is surrounded by other attractions like the Tempozan Giant Ferris Wheel, Santa Maria sightseeing cruise, and the Tempozan Marketplace shopping area.
Many visitors spend half a day in the area, combining marine exploration with food, shopping, and seaside relaxation.
Every year, over 2.3 million people visit Kaiyukan, making it not only one of the most visited aquariums in Japan but also one of the top-ranked in the world.
It’s more than just an attraction — it’s a showcase of Japan’s love for the sea and its deep respect for nature.
Why It’s Worth Adding to Your Osaka Itinerary
If you’re visiting Osaka for the first time, Kaiyukan offers a peaceful yet awe-inspiring contrast to the city’s bustling urban energy.
It’s the perfect way to experience Japan’s natural beauty — without leaving the city.
Imagine standing in front of a massive 9-meter-deep tank, watching a whale shark glide past gracefully.
It’s a moment that stays with you long after your trip — one that reminds you of how vast and beautiful our planet’s oceans truly are.
Kaiyukan Aquarium Ticket Prices and Discounts (2025 Updated)
Before diving into the ocean world inside Kaiyukan, it’s best to know your ticket options — how much they cost, where to buy them, and how to save a little extra.
Here’s a complete, updated guide to help you plan your visit smartly and efficiently.
Standard Ticket Prices (2025)
As of 2025, the regular entry prices for Kaiyukan Aquarium are as follows:
| Category | Price (JPY) | Approx. Price (USD) |
|---|---|---|
| Adults (16 years and older) | ¥2,700 | $18 |
| Children (Elementary to Junior High, ages 7–15) | ¥1,400 | $9 |
| Toddlers (Ages 3–6) | ¥700 | $5 |
| Infants (Under 3) | Free | — |
| Seniors (65 and over) | ¥2,400 | $16 |
💡 Tip: Prices are the same for both domestic and international visitors. However, buying online can sometimes get you discounts or skip-the-line benefits.
Children under 3 years old can enter for free, and tickets are valid for the entire day — meaning you can take your time exploring every exhibit.
Online Tickets and Payment Options
There are several convenient ways to buy your Kaiyukan tickets:
- Official Website:
You can purchase e-tickets directly from the Kaiyukan official site, available in English, Chinese, and Korean.
After purchasing, you’ll receive a QR code to scan at the entrance. - Travel Platforms:
Sites like Klook, Trip.com, and KKday offer digital tickets, sometimes with small discounts or combo deals.
These are especially useful for tourists who prefer to plan ahead and pay in their local currency. - On-Site Ticket Machines:
Located near the main entrance, these machines accept both credit cards and cash (Japanese yen).
Most machines have an English option, so you can easily purchase same-day tickets. - Convenience Stores:
Major Japanese convenience stores (7-Eleven, Lawson, FamilyMart) sometimes sell Kaiyukan tickets, though this may vary by region.
💡 Payment Methods:
Kaiyukan accepts most major credit cards, IC transportation cards (like Suica, ICOCA), and QR payment apps such as PayPay or Alipay.
Available Discounts and Combo Tickets
If you’re looking to make the most of your Osaka trip, Kaiyukan offers several bundle and discount options that combine entry with nearby attractions.
1. Kaiyukan + Tempozan Ferris Wheel Combo Ticket
Located right next to the aquarium, this giant Ferris wheel offers stunning panoramic views of Osaka Bay.
The combo ticket saves you around ¥300 compared to buying separately.
- Available at the aquarium ticket counter
- Recommended for couples or sunset visits
2. Kaiyukan + Santa Maria Cruise Set
Enjoy a 45-minute sightseeing cruise around Osaka Bay on the Santa Maria, a ship modeled after Columbus’s vessel.
Combo tickets are slightly discounted and can be purchased on-site or through official partners.
3. Kaiyukan + Osaka Amazing Pass
If you’re exploring multiple attractions in Osaka, the Osaka Amazing Pass can be a smart deal.
While it doesn’t include Kaiyukan entry itself, it provides discount coupons and free access to other nearby spots such as the Ferris wheel and cruise.
4. Group, Student, and Disability Discounts
- Groups of 20 or more receive small discounts on admission.
- Students may receive reduced prices with valid ID.
- Visitors with disability certificates (and one companion) can enter at half price.
💡 Travel Tip: Some online travel sites run seasonal campaigns — for example, winter or summer discounts of ¥200–¥500 per person. It’s worth checking before you go!
Day Passes and Annual Memberships
If you live in Japan or plan to visit multiple times a year, Kaiyukan also offers an annual passport:
- Adults: ¥5,400
- Children: ¥2,800
This gives unlimited entry for 12 months — great for families living in the Kansai area.
Annual members also get 10% off at the gift shop and restaurants within Tempozan Marketplace.
How to Redeem or Enter
If you purchased your ticket online, you don’t need to print it. Simply show the QR code (from your phone or app) at the gate.
Staff will scan it, and you’ll be guided directly inside. Entry is usually quick and efficient, even during weekends.
💡 Pro Tip:
Weekends and holidays can be busy, so buying tickets a day in advance is the best way to skip long queues.
Refunds and Re-entry Policy
- Refunds: Once purchased, tickets are generally non-refundable, except in cases of closure due to weather or emergencies.
- Re-entry: You can leave and re-enter the aquarium on the same day — just ask for a re-entry stamp at the exit before leaving.
Why Buying in Advance Is Worth It
Pre-booking your ticket not only saves you time but also guarantees entry on busy days.
Kaiyukan is one of Osaka’s most visited attractions, and during weekends or school holidays, the lines can stretch outside the building.
With an e-ticket, you can simply walk in, scan your code, and start your ocean adventure right away.
Best Time to Visit and How to Avoid Crowds
Kaiyukan Aquarium is one of Osaka’s most popular attractions, drawing millions of visitors every year — families, couples, and solo travelers alike.
While the massive tanks and peaceful ocean atmosphere make it enjoyable at any time, visiting at the right time of day can completely change your experience.
Here’s how to plan your trip smartly and avoid the busiest hours.
Recommended Visiting Hours
Kaiyukan is open almost every day of the year. The usual hours are:
- Opening Hours: 10:00 AM – 8:00 PM
- Last Entry: 7:00 PM
Hours may change slightly during holidays or special events, so it’s always good to check the official website before visiting.
💡 Pro Tip: Arrive early — ideally between 10:00 AM and 11:30 AM — to enjoy the exhibits while they’re quiet. The first two hours after opening are the calmest, with fewer school trips or large tour groups.
If you prefer a more romantic or relaxed atmosphere, visit after 6:00 PM. The aquarium is beautifully illuminated in the evening, and the crowds thin out as families with young children start to leave.
The soft blue lighting and reflection of fish gliding past give it a magical, almost dreamlike vibe.
How Long to Spend at Kaiyukan
Most visitors spend about 1.5 to 2 hours exploring the aquarium at a comfortable pace.
If you enjoy taking photos, reading the English signs, or watching the animals closely, you may want to allow up to 3 hours.
The route is designed as a continuous spiral, guiding you slowly downward from the 8th floor to the 4th floor, circling around the massive central tank.
There are benches along the way, so you can pause and admire the graceful movement of the whale shark or the slow dance of the jellyfish.
💡 Suggested Flow:
Start with the Japan Forest area (otters and river fish), then gradually move down through the Antarctic, Pacific Ocean, and Deep Sea zones.
End your journey at the Jellyfish Galaxy, where delicate lights and slow music create a peaceful finale.
Avoiding Peak Times
Like most top attractions in Japan, Kaiyukan can get crowded — especially during weekends and national holidays.
Here’s when to avoid if you want a more relaxing visit:
- Weekends (Saturday & Sunday) — Expect families and couples.
- National Holidays — Especially Golden Week (late April–early May) and Obon (mid-August).
- Rainy Days — Locals often choose indoor attractions like Kaiyukan on wet days, making it busier than usual.
💡 Best Days to Visit:
- Tuesday to Thursday mornings are the quietest times.
- Avoid public holidays and local school vacation periods (late July to mid-August).
Night Visit Experience
Many visitors don’t realize that Kaiyukan transforms after sunset.
From 5:00 PM onward, the lighting inside becomes more dramatic — tanks are softly lit, and the reflections shimmer like moonlight under the sea.
The giant whale shark glides slowly through the dark blue water, surrounded by glowing fish — it feels like stepping into a dream.
Outside, the nearby Tempozan Ferris Wheel lights up with colorful patterns, offering one of Osaka’s most photogenic night views.
A perfect combo for couples or travelers who love capturing city lights.
Seasonal Considerations
- Spring (March–May): Pleasant weather, moderate crowds. Great for combining with cherry blossom sightseeing.
- Summer (June–August): Busy but vibrant — many family visitors. Stay cool inside the air-conditioned exhibits.
- Autumn (September–November): Ideal time — fewer tourists and mild temperatures.
- Winter (December–February): Quiet and cozy, especially in the evenings when illumination events are held.
Best Time of Day Summary
| Time | Crowd Level | Atmosphere | Recommended For |
|---|---|---|---|
| 10:00 AM – 12:00 PM | Low | Calm, bright | Families, photographers |
| 1:00 PM – 4:00 PM | High | Busy | Group tours, kids |
| 6:00 PM – 8:00 PM | Low | Romantic, quiet | Couples, solo travelers |
💡 Extra Tip: If you’re traveling with kids, visit in the morning. If you’re traveling as a couple, evening visits feel more intimate and scenic.
Additional Crowd-Avoiding Tips
- Buy tickets online: Skip the long ticket lines at the entrance.
- Visit on weekdays: Monday mornings are the least crowded.
- Go during lunch hours (12:00–1:30 PM): Many people are eating, so it’s less crowded inside.
- Check event schedules: Feeding times and special shows attract crowds — plan around them if you prefer peace.
Final Thought
Whether you visit in the bright morning or under the soft evening glow, Kaiyukan always feels special.
But timing it right makes all the difference — when you can stroll quietly, listen to the gentle hum of the water, and feel the wonder of the ocean without distraction.
Take your time. Watch the whale shark glide by.
In those quiet moments, you’ll understand why Kaiyukan is not just an aquarium — it’s a window into a world of calm and beauty.
How to Get to Kaiyukan Aquarium and Nearby Attractions
Kaiyukan Aquarium is located in Tempozan Harbor Village, a scenic waterfront area in Osaka Bay.
It’s easy to reach from anywhere in Osaka, and the journey itself offers a glimpse of the city’s relaxing seaside charm.
Here’s a complete guide to getting there smoothly — and making the most of your time around the area.
Access from Major Areas in Osaka
1. From Osaka Station or Umeda
Take the Osaka Metro Chuo Line from Honmachi Station (a short transfer from Osaka/Umeda).
Get off at Osakako Station (大阪港駅).
Kaiyukan is just a 5-minute walk from Exit 1 of Osakako Station.
🕒 Travel Time: About 25–30 minutes
💴 Cost: Around ¥280 (≈ $2 USD)
2. From Namba or Shinsaibashi
Take the Osaka Metro Yotsubashi Line to Honmachi Station.
Transfer to the Chuo Line and continue to Osakako Station.
🕒 Travel Time: About 25 minutes
💴 Cost: Around ¥280
3. From Kansai International Airport (KIX)
Take the Nankai Airport Line to Namba Station.
From Namba, transfer to the Osaka Metro Chuo Line as above.
🕒 Travel Time: About 60–70 minutes
💴 Cost: Around ¥1,100
4. From Universal Studios Japan (USJ)
For travelers visiting both attractions in one day:
Take the JR Yumesaki Line from Universal City Station to Bentencho Station.
Transfer to the Osaka Metro Chuo Line toward Osakako Station.
🕒 Travel Time: About 20 minutes
💴 Cost: Around ¥360
💡 Pro Tip: If you have an ICOCA or Suica card, you can use it for all these routes — just tap in and out, no tickets needed.
From the Station to the Aquarium
Once you exit Osakako Station, you’ll see signs guiding you toward the Tempozan Harbor Village area.
Follow the road lined with souvenir shops and cafés — within 5 minutes, the striking blue and red building of Kaiyukan Aquarium will appear in front of you.
Right next to it stands the Tempozan Giant Ferris Wheel, one of Osaka’s most famous landmarks.
You’ll also find plenty of restaurants, snack stalls, and family-friendly attractions in the same complex.
Tempozan Area Highlights
The Kaiyukan Aquarium is the centerpiece of Tempozan Harbor Village, a compact yet lively area perfect for spending half a day.
Here are some nearby attractions worth exploring before or after your visit:
1. Tempozan Giant Ferris Wheel 🎡
Standing 112.5 meters tall, this Ferris wheel offers breathtaking views of Osaka Bay, the Akashi Kaikyō Bridge, and even Mount Rokko on clear days.
At night, it lights up with colorful LED patterns — sometimes reflecting the day’s weather forecast!
🎟️ Tickets: ¥900 per adult
⏰ Duration: About 15 minutes
2. Tempozan Marketplace 🛍️
A shopping and dining complex connected directly to the aquarium.
You’ll find restaurants serving everything from Japanese sushi and takoyaki to international cuisine.
There’s also a food court with ocean views, souvenir shops, and an official Kaiyukan gift store featuring adorable penguin and whale shark plushies.
3. Legoland Discovery Center Osaka 🧱
Perfect for families with children. This indoor theme park features rides, 4D theaters, and an impressive LEGO model of Osaka city.
🎟️ Tickets: Around ¥2,800 per person
👶 Suitable for kids aged 3–10
4. Santa Maria Cruise ⛵
Modeled after Christopher Columbus’s ship, the Santa Maria offers a 45-minute sightseeing cruise around Osaka Bay.
You can board directly from the pier next to Kaiyukan.
🎟️ Tickets: ¥1,600 adults / ¥800 children
⏰ Departures: Every hour between 11:00 AM – 4:00 PM
5. Naniwa Kuishinbo Yokocho 🍜
Inside Tempozan Marketplace, you’ll find this retro-style food street designed to look like Osaka in the 1960s.
It’s the perfect spot to sample local comfort foods — takoyaki, okonomiyaki, and kushikatsu.
Family-Friendly Facilities
Kaiyukan is known for being one of Japan’s most family- and baby-friendly attractions.
Here are a few facilities that make your visit smooth and comfortable:
- Stroller Access: The entire aquarium is stroller- and wheelchair-accessible, with elevators connecting each floor.
- Nursing Rooms: Located near the exit and in the Tempozan Marketplace.
- Lockers: Coin lockers available near the entrance for large bags.
- Restaurants: Several cafés inside the building, including the Kaiyukan Café overlooking Osaka Bay.
- Rest Areas: Benches and observation points throughout the route for breaks.
💡 Parent Tip: If you’re visiting with small children, aim for weekday mornings — fewer crowds and easier navigation with strollers.
Getting Around the Tempozan Area
If you have extra time, consider combining Kaiyukan with nearby sightseeing spots like Osaka Port, Universal Studios Japan, or Osaka Castle.
The Chuo Line and JR Yumesaki Line make it easy to hop between these major attractions in under 30 minutes.
For those with the Osaka Amazing Pass, transportation on the subway is included, and many nearby attractions offer discounts or free entry.
💡 Traveler Tip: Visiting Kaiyukan in the late afternoon and staying until evening is ideal — enjoy the aquarium, then ride the Ferris wheel at sunset for a perfect Osaka memory.
Final Thought
Getting to Kaiyukan is easy, and the entire Tempozan area offers more than just a quick visit — it’s a full-day experience filled with sea views, local flavors, and family fun.
From the moment you step off the subway to your last glance at the glowing Ferris wheel, everything here feels perfectly designed for relaxation and exploration.
Whether you come for the whale sharks or the Osaka skyline, the journey to Kaiyukan is part of the adventure itself.
Is Kaiyukan Aquarium Worth the Price? Honest Traveler Review
Many travelers wonder before visiting: Is the Kaiyukan Aquarium really worth the ticket price?
After spending a few hours wandering through its glowing blue halls, most visitors walk out with the same answer — absolutely yes.
What You Get for the Ticket Price
The first thing you notice is the scale.
Kaiyukan isn’t just a place to see fish — it’s a massive, immersive world where you can walk beside the ocean’s gentle giants.
The main tank, representing the Pacific Ocean, stretches across multiple floors and holds over 5,400 tons of water, home to its star resident, the whale shark.
Around it, more than 30,000 marine creatures from 620 species live in carefully designed habitats that recreate the oceans of the world — from the icy Antarctic to the tropical Great Barrier Reef.
Every step downward feels like a new chapter in a story told by light, sound, and motion.
For ¥2,700 (around $18 USD), you’re not just buying a ticket — you’re stepping into an experience that blends education, beauty, and peace.
Families often call it “the best indoor attraction in Osaka,” while solo travelers describe it as “surprisingly calming.”
💬 “It’s like walking through an underwater dream,” wrote one visitor on TripAdvisor.
💬 “You forget about time. The whale shark just keeps swimming — and you can’t stop watching.”
Reviews and Local Impressions
Locals love Kaiyukan not only for its beauty but also for its philosophy — connecting people with the sea.
Unlike many tourist attractions that feel commercial, Kaiyukan has a sense of purpose.
The exhibits focus on the balance of ecosystems, reminding visitors of the fragile harmony between humans and the ocean.
Children press their hands against the glass, amazed by the slow dance of manta rays.
Couples stand quietly by the jellyfish tunnel, surrounded by soft blue light.
Elderly visitors smile as they see the playful penguins, a symbol of joy that transcends age.
Even Japanese residents who’ve visited multiple times say that each season brings something new — special exhibits, light shows, or themed decorations that make the atmosphere feel fresh.
💡 Fun Fact: The whale shark at Kaiyukan is named Yuu-chan, and many visitors make a point to see her every time they come to Osaka.
The Value Beyond Money
What makes Kaiyukan special isn’t just its size or variety — it’s how it makes you feel.
The deeper you go, the quieter it gets. The sound of bubbles, the shimmer of light, the slow, rhythmic motion of fish — everything works together to slow you down.
In a fast-paced city like Osaka, this calm feels priceless.
For parents, it’s a place where their children can learn and be inspired.
For travelers, it’s a moment of peace in the middle of an exciting trip.
For photographers, it’s pure magic — the reflections, colors, and depth of the tanks create endless photo opportunities.
Many visitors end up staying longer than they planned, just sitting in front of the main tank, watching the whale shark glide past again and again.
It’s the kind of quiet moment that stays with you long after you leave.
Comparing to Other Aquariums
Japan is home to several world-class aquariums — like Okinawa Churaumi in the south and Tokyo’s Sumida Aquarium — but Kaiyukan stands out for its architecture and storytelling.
The design leads you on a single, continuous path that feels like a real underwater journey, not a series of separate exhibits.
And because it’s in Osaka, you can easily combine it with nearby attractions — Universal Studios Japan, Osaka Castle, or Dotonbori — making it one of the most accessible “big experiences” in the city.
When you consider the combination of convenience, design, and emotion, Kaiyukan offers exceptional value for the price.
Final Thoughts: More Than Just a Ticket
Visiting Kaiyukan isn’t just about seeing sea creatures. It’s about reconnecting with nature through awe and stillness.
In a world where everything moves fast, it invites you to slow down, to breathe, and to simply watch life unfold beneath the surface.
So is it worth it?
Yes — not only for the marine life, but for the feeling it leaves behind.
As you step out into the Tempozan evening air, you might look back once more at the glowing aquarium building —
and realize that for the price of a single ticket, you didn’t just visit an attraction.
You experienced something quietly unforgettable.
