Io World Kagoshima City Aquarium: Opening Hours and What to Prepare
Overlooking Kinkō Bay and Sakurajima, Io World Kagoshima City Aquarium (Io World Kagoshima Suizokukan) introduces around 10,000 marine animals representing approximately 800 species from the Nansei Islands to the waters of Kagoshima, including whale sharks in the huge Kuroshio Tank.
When adding the aquarium to your itinerary, deciding what you want to enjoy and what you will do afterward makes it easier to plan your day.
Use the visitor information for your actual visit date rather than relying solely on old travel articles or photographs.
Choose Your Arrival Time Based on Opening Hours and Visit Length
The aquarium is open from 9:30 a.m. to 6:00 p.m., with final admission at 5:00 p.m.
During the Golden Week and Obon holiday periods, Saturdays and Sundays during summer vacation, and certain other dates, Nighttime at the Aquarium extends opening hours to 9:00 p.m., with final admission at 8:00 p.m.
The aquarium closes for 4 days beginning on the first Monday in December and operates normally over the New Year holidays.
Additional closures may be scheduled for maintenance or other work, so check the official website notices as well as final admission times before setting out.
The average visit is said to take around 1 hour and 30 minutes, but allow extra time if you plan to wait for events or take photographs.
If you have onward transportation or a meal reservation, agree on a departure time with your companions to avoid rushing through the exhibits.
Decide Whether to Focus on Observation, Photography, or Learning
Where you choose to linger will depend on whether you want to watch the animals quietly, take photographs, or learn from the explanatory displays.
If you want to catch scheduled events such as whale shark feeding or dolphin presentations, work backward from their start times to plan your route through the aquarium.
Share what you are most looking forward to in advance and discuss how to spend time according to everyone's interests.
Use Coin Lockers to Travel Light
Organize any bags you carry so they are easy to handle when crouching or turning in front of the tanks.
Coin lockers are available at the main and group entrances, and the 100 yen deposit is returned after use, so locate them before entering if you want to store bulky belongings.
Large luggage that will not fit in a locker can be left free of charge at the 1F information desk, excluding valuables.
Large lockers are limited, so ask at the information desk when you arrive with a suitcase or similar luggage.
Io World Kagoshima City Aquarium Admission Fees and Payment
Individual admission for visitors living outside Kagoshima City is 2,000 yen for adults of high school age and above and 1,000 yen for elementary and junior high school students; preschool children enter free.
For groups of 20 or more, members living outside Kagoshima City qualify for group rates of 1,600 yen for adults and 800 yen for children.
Separate rates are available for Kagoshima City residents, who must show proof of address such as a driver's license or My Number Card.
Admission is waived for visitors presenting a physical disability certificate, an intellectual disability certificate, or a mental disability health and welfare certificate. Admission is also waived for 1 accompanying person when the visitor presents an intellectual disability certificate, a mental disability health and welfare certificate, or a physical disability certificate for grades 1–3 (or grade 4 if the holder is aged 65 or above).
Admission can be paid by credit card or electronic money, but these methods cannot be used to purchase combination tickets with Hirakawa Zoological Park or the Chiran Peace Museum for Kamikaze Pilots.
An annual pass costs the equivalent of 2 admissions and allows unlimited visits for 1 year.
Admission is required even if you are entering only to shop at the 1F gift shop.
From Buying Tickets to Exploring the Aquarium
Understanding both the admission procedure and how to move around inside will help you start your first visit comfortably.
Check Ticket Purchase and Re-entry Procedures
If you are unsure how to buy tickets, tell the staff the number of people in your party and their ages.
If you need language or mobility support, explain the language you would like to use or the specific difficulty you are experiencing and ask what assistance is available.
If you plan to go outside during your visit, make sure you understand the re-entry procedure, which is available only on the day you paid admission, before leaving.
Keep your ticket stub safe, as you will need to show it to a staff member when re-entering.
If you are going outside to see the Dolphin Waterway, complete the re-entry procedure at the information desk before leaving the building.
Use the Exhibit Map to Set Your Own Pace
Exhibits are spread across floors 1F to 5F, so checking the official website's exhibit map in advance will help you find the floors you want to visit.
Follow any designated viewing route, and ask staff rather than continuing blindly if you lose track of the route or your location.
If people are gathered at an exhibit you want to see, wait with consideration for others, perhaps viewing it from an available space.
If your group separates, agree on a recognizable meeting point inside and how you will contact each other.
How to Observe Marine Animals: Take Your Time at the Tanks
Even if you do not know an animal's name, looking at its shape, movement, and surroundings in turn gives you more clues about what you are seeing.
Take in the Whole Tank Before Following an Animal
Start by looking across the entire tank to see where the animals are and which way they are moving.
When an animal catches your attention, compare visible features such as its outline, markings, and fin movements.
Watch What Happens When Animals Stay Still
Look beyond active swimming and notice animals that remain still or nestle against their surroundings.
Watching animals as they are, without tapping the glass or shining lights to provoke movement, is a basic part of aquarium etiquette.
Harming exhibit animals or damaging the facilities or equipment is prohibited.
Compare the Explanatory Displays with the Animals
When reading a description, focus on what interests you, such as an animal's physical features or habitat.
Comparing the explanation with features you have already noticed can help you put into words what you find fascinating.
Talking about memorable features with your companions may also draw your attention to details you missed.
If you use a translation feature, step aside so you do not block the passage while reading.
The official website's marine life encyclopedia lets you search descriptions by animal name, making it useful for looking up animals again after your visit.
Best Aquarium Tanks to See on Each Floor
With the central theme Kuroshio Rōman Kaidō, evoking a journey along the Kuroshio Current, Io World Kagoshima City Aquarium introduces marine life from the Nansei Islands to the waters of Kagoshima.
2F: Watch Whale Sharks in the Kuroshio Tank
The Kuroshio Tank on 2F is the aquarium's largest tank, holding 1,500 cubic meters of water.
Whale sharks, nicknamed Yūyū, swim alongside skipjack tuna and other fish that migrate with the Kuroshio Current.
The aquarium raises juvenile whale sharks caught in set nets until they reach 5.5 meters, then returns them to the sea.
Watch their large bodies turn gently or compare their size with the fish around them to appreciate the tank's impressive scale.
2F: Discover Coral Reef Life in the Sea of the Nansei Islands
The Sea of the Nansei Islands area presents coral reef creatures in tanks that recreate a variety of underwater habitats, especially those around Amami Ōshima.
Look beyond the colorful fish to corals, seaweed, starfish, and sea cucumbers to discover the diversity of life on a coral reef.
Comparing creatures with different shapes, such as spotted garden eels peeking out of the sand and large humphead wrasses, is another rewarding way to explore.
3F: Enter the Quiet World of the Deep Sea and Jellyfish Corridor
The Deep Sea of Kagoshima exhibit on 3F lets you observe animals from Kagoshima's deep waters in an atmosphere that evokes a dive into the ocean depths.
The seas around Kagoshima, including Kinkō Bay, are known for their wealth of jellyfish, and the Jellyfish Corridor displays different species according to the season.
Touchscreens introduce jellyfish anatomy and ecology, so explore these displays alongside their gently drifting movements.
4F and 5F: Explore Kinkō Bay through Satsuma Tubeworms and the Observation Hall
The Satsuma tubeworm, Lamellibrachia satsuma, was discovered in February 1993 by the Japan Agency for Marine-Earth Science and Technology's research vessel Kaiyō on the seabed at a depth of 82 meters in the inner part of Kinkō Bay.
This new species of tubeworm was found close to an underwater volcano, and the aquarium became the first in the world to display living Satsuma tubeworms.
The Waters off Kagoshima exhibit on 4F presents marine life around mainland Kagoshima Prefecture, focusing on Kinkō Bay, which is unusually deep for an enclosed bay, reaching more than 200 meters.
At the top of the escalator, the observation hall offers views of Kinkō Bay and Sakurajima, along with vending machines selling cold drinks and ice cream, making it a pleasant place for a break.
The complete skeleton of a Longman's beaked whale in the observation hall is described as the world's first complete adult skeleton of the species.
1F: Get Closer to Marine Life at the Observation and Dolphin Pools
At the Waku-waku Observation Pool on 1F, you can examine starfish, sea urchins, sea cucumbers, and other animals while touching them.
Touching is allowed only during Touch Time from 10:45 a.m. to 4:15 p.m.; outside those hours, Observation Time is for watching only.
Put your hand into the pool when touching the animals, and do not lift them out of the water.
Watching the suction-like tube feet of starfish and sea cucumbers move makes observing these small creatures even more interesting.
The Dolphin Pool is home to bottlenose dolphins and hosts Dolphin Time, a presentation about their abilities and anatomy.
Aquarium Events to Plan Your Visit Around
Throughout the day, Io World Kagoshima City Aquarium holds events where you can hear keepers' explanations and watch animals feeding.
The regular schedule mainly includes the following events.
- Whale Shark Feeding Time: about 5 minutes from 10:15 a.m., Kuroshio Tank on 2F
- Dolphin Time: about 15 minutes from 11:00 a.m., 1:15 p.m., and 4:00 p.m., Dolphin Pool on 1F; a 2:30 p.m. session is held on weekends, public holidays, and during summer vacation
- Seal Time: about 10 minutes from 11:40 a.m. and 3:15 p.m., Seal Tank on 1F
- Aqua Lab: about 15 minutes from noon and 2:00 p.m., Aqua Lab on 2F
- Kuroshio Tank Marine Life Commentary: about 5 minutes from 4:30 p.m., Kuroshio Tank on 2F
- Shiokaze Dolphin Watching: 11:30 a.m.–3:30 p.m., outdoor Dolphin Waterway
On weekdays at 10:00 a.m. and 3:00 p.m., staff lead approximately 45-minute guided tours explaining tanks and fish; same-day registration at the main building's 1F information desk is limited to the first 15 people.
On weekends and public holidays, an approximately 45-minute behind-the-scenes tour starts at 3:00 p.m. and explains areas such as the water purification system; it is limited to the first 10 same-day applicants.
Both tours may be canceled during busy periods.
The outdoor Dolphin Waterway is a 275-meter-long exhibit that uses natural seawater connected to Kinkō Bay; times may change or activities may be canceled depending on sea conditions and the dolphins' health.
Event times can vary by day, so check the official website or notices inside the aquarium on your visit date.
Aquarium Photography Etiquette: Flash Restrictions and Equipment Rules
You can take photographs and videos inside, but check the signs and staff instructions at each location before preparing to shoot.
Whether photography is permitted and the rules for using flash or equipment should be considered separately.
Tanks Where Flash Photography Is Prohibited
Flash photography is prohibited at the following tanks.
- 1F: Seal Tank
- 2F: Kuroshio Tank
- 3F: Deep Sea of Kagoshima area
- 4F: Sawshark and Bigfin Reef Squid Tank
To reduce stress on the animals, consider photographing without flash even where it is not specifically prohibited.
Learn How to Turn Off Your Flash Before Arriving
Knowing how to disable automatic flash and camera sounds makes it easier to adjust your device to the rules on site.
If your face or screen is reflected in the tank, change your angle or framing slightly rather than pressing equipment against the glass.
Avoid Occupying Photo Spots with Tripods or Selfie Sticks
Prolonged use of monopods, tripods, or selfie sticks in front of tanks, and occupying space by reserving seats in the dolphin stands, are prohibited as behavior that inconveniences other visitors.
Live streaming, commercial filming, and photography that infringes copyright or portrait rights are also prohibited, and drones may not be flown on the grounds.
Review or edit photographs somewhere that does not obstruct viewing, and leave time to watch the animals directly.
When sharing photographs that include other visitors, respect their privacy by adjusting the framing or image so their faces cannot be identified.
Keep the following ways of sharing space with others in mind while taking photographs.
| Situation | Considerate Action | Action to Avoid |
|---|---|---|
| Photographing a companion | Check pedestrian traffic | Blocking the passage |
| Positioning equipment | Leave space around you | Extending equipment widely |
| Changing your photo position | Look around before moving | Walking while watching the screen |
Useful Japanese Signs and Questions at the Aquarium
Travelers unfamiliar with Japanese can find it easier to follow instructions by learning the meanings of signs that affect their visit.
The official website is available in English, Korean, and simplified and traditional Chinese as well as Japanese, so check basic information in a language you can read comfortably before visiting.
Read Signs in the Context of Their Location
For prohibitions and requests, check both what is restricted and the area to which the restriction applies.
Flash photography is prohibited at some tanks, so remembering the phrase “furasshu kinshi,” meaning “no flash,” is useful.
The following table gives examples of signs used at Japanese facilities; follow the actual notices at the aquarium.
| Example Sign Wording | Meaning | What to Do |
|---|---|---|
| Satsuei kinshi | No photography | Put your camera away |
| Tachiiri kinshi | No entry beyond this point | Do not cross the boundary |
| Inshoku kinshi | No eating or drinking | Ask where it is permitted |
| Junro | Direction of the viewing route | Follow the arrows |
Ask Simple Questions in Japanese
For directions, you might ask “Deguchi wa doko desu ka?” (“Where is the exit?”). For photography, try “Koko de shashin o totte mo ii desu ka?” (“May I take a photograph here?”). Keep your question short and specific.
To store your bags, ask “Koin rokkā wa doko desu ka?” (“Where are the coin lockers?”). To go outside temporarily, say “Sainyūkan shitai desu” (“I would like to re-enter”) so staff can guide you.
For drinks or rest areas, point to the location and ask “Koko de nonde mo ii desu ka?” (“May I drink here?”) or “Yasumeru basho wa arimasu ka?” (“Is there somewhere to rest?”).
Ask for Written Information if You Cannot Follow the Explanation
If an explanation is difficult to understand, say “Mō ichido onegaishimasu” (“Please say that again”) and ask the staff to point out the location or write the information down.
Writing boards are available at the 1F information desk and gift shop, and you can arrange in advance if you would like an explanation in sign language.
Typing your question on a smartphone and showing it to staff can help you communicate even if you are not confident about pronunciation.
Enjoy the Aquarium at a Pace That Suits Children and Companions
Paying attention to your companions' interests and physical condition helps everyone enjoy the aquarium at their own pace.
Adjust how long you stop and rest according to differences in energy and interests.
Help Children Observe from Their Own Perspective
When visiting with children, ask questions about what is in front of them, such as “What colors can you see?” or “Where did it swim?” to share the experience.
Allowing time for children to point out discoveries and describe movements can open up further conversation.
When looking for a good view, choose somewhere that does not block others' sightlines or passage, and do not let children climb on barriers or equipment.
Strollers are loaned free of charge for children aged 2 and under, but they cannot be taken outside the building.
There are 2 private nursing rooms near the group entrance on 1F, equipped with baby beds, a microwave, scales, and other facilities; men may also use them.
Check Your Belongings and Onward Travel Before Leaving
If you feel tired, discuss what to do afterward with your companions, including the option of ending the visit early.
When leaving, check your belongings and move to a place where you can calmly look up transportation to your next destination.
For souvenirs, browse the 1F gift shop for original merchandise, snacks, stuffed animals, and more.
Visitor Facilities and Rules for Eating and Drinking
The aquarium offers facilities and services that are useful while traveling.
- Free Wi-Fi: connect to the IOworld network using email authentication or advance registration with FREESPOT
- Wheelchairs and strollers: free loans on a first-come, first-served basis after admission; reservations are not available
- Accessible restrooms: available on each floor from 1F to 4F of the main building, with ostomy facilities on 1F
- Restaurant: Suizokukan no Kajitsudō on 2F serves meals and refreshments with waterfront views
- Cashless payment: credit cards and electronic money are accepted for admission and at the shop
Wi-Fi connectivity is not guaranteed and the service may stop without notice, so save maps and transfer information in advance.
The restaurant opens from 11:00 a.m. to 4:00 p.m. on weekdays and until 5:00 p.m. on weekends and public holidays; last orders for food are at 3:00 p.m. on all days.
During Nighttime at the Aquarium events, except on the date of the Summer Night Fireworks Festival, restaurant hours extend to 7:00 p.m., with last orders for food at 4:00 p.m.
During busy periods such as Golden Week, summer vacation, and 3-day weekends, visitors must order a meal or dessert between opening and 1:00 p.m.; drinks-only orders are not accepted.
Eating and drinking are limited to designated areas; you may eat packed lunches on the outdoor lawn or in the dolphin stands, but eating in the stands is not allowed during dolphin events.
The observation hall is intended for drinks and ice cream, so please do not unpack a lunch there.
Pets other than assistance dogs are not allowed inside, and the aquarium does not offer pet care.
How to Get to Io World Kagoshima City Aquarium and Where to Park
The aquarium is at 3-1 Honkō-shinmachi, Kagoshima City, and can be reached from Kagoshima-Chūō Station by tram or city bus.
- Tram: take Route 2 from Kagoshima-Chūō Station, get off at Suizokukan-guchi tram stop, and walk about 8 minutes
- City bus: take Route 16 or 24 toward Kagoshima Suizokukan-mae from East Bus Stop 5 or 6 at Kagoshima-Chūō Station and get off at Kagoshima Suizokukan-mae bus stop
- On foot: about 15 minutes from JR Kagoshima Station
There is no dedicated aquarium parking for general visitors; drivers can use nearby prefectural parking lots 1, 2, or 3, among others.
For standard cars, the first hour is free and each additional hour costs 200 yen; aquarium visitors do not receive a parking discount.
Public transportation is recommended during Golden Week and summer vacation, when roads around the aquarium tend to be congested.
Planning Your Kagoshima Aquarium Visit
To prepare for Io World Kagoshima City Aquarium, check the day's visitor information, including opening hours and admission fees, and agree on what your group wants to enjoy.
As you explore, watch the shapes and movements of animals such as whale sharks in the Kuroshio Tank and Satsuma tubeworms, follow no-flash and eating rules, and share viewing space considerately with other visitors.
Ask short questions when you are unsure, and adapt your visit to your companions' interests and energy levels for a relaxed experience.
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