Item image

Osaka Aquarium Kaiyukan

[YouTube] Osaka Aquarium Kaiyukan – Your Best Japan Guide

What is Kaiyukan?

Kaiyukan is an eight-story aquarium and has one of the largest fish tanks in the world. It is located in the west part of Osaka City, a 5-minute walk from Osakako Station.

Kaiyukan has 14 tanks on view, and each of them contains a bountiful ocean from all over the world. There are about 30 thousands sea creatures, representing 620 separate species.

Kaiyukan was chosen as the best sightseeing spot in the Kansai area by local inhabitants (even overtaking Universal Studio Japan).

Osaka Aquarium Kaiyukan | Japanesquest

What to See?

1. Animal life on the 7th floor

Entering Kaiyukan, you are greeted by the “Aqua Gate,” which leads you to the starting point of the building on the 8th floor.

Aqua gate in Kaiyukan | Japanesquest

The first highlight is the animal area on the 7th floor. There are 7 tanks, and each of them has a different theme, with numerous species of sea life of from oceans from all over the world.

You see sea otters from the Aleutian Islands swimming leisurely while sea lions from Monterey Bay are lying down next to them. You find penguins from Antarctica with their swaying walk, while dolphins from the Tasman Sea swim across right in front of your eyes.

You can take a peek inside animals’ lives from around the world.

sea otter in Kaiyukan | Japanesquest sea lion in Kaiyukan | Japanesquest
penguin in Kaiyukan | Japanesquest dolphin in Kaiyukan | Japanesquest

2. Feeding times

In Kaiyukan, the animals have regular feeding times every day. Attendants give a lecture on each species in Japanese while feeding them.

It’s a great chance to see a rare moment, so you might like to schedule your visit around the feeding times.

Kapybara Feeding Time in Kaiyukan | Japanesquest RIngtailed Coati Feeding Time in Kaiyukan

3. The Pacific on 4th 5th and 6th Floor

The most distinctive feature of Kaiyukan is The Pacific tank, which is a recreation of the Pacific Ocean. The size of the tank, at its maximum, is 34 meters in length by 9 meters in depth. It holds 5,400 tons of water.

The Pacific tank in Kaiyukan | Japanesquest

As you circle down around The Pacific from the 6th floor to the 4th floor, you will see a wide range of fish, such as whale sharks, rays, and horse mackerels, while a family of groupers are sedately swimming.

Whale Shark in Kaiyukan | Japanesquest

When you reach the bottom, it is very bewildering to look up at The Pacific from below. It is a view that you will never get tired of.

4. Kaiyukan at Night

After 5 pm, they turn off the lights, and Kaiyukan becomes a “Night Ocean.”

The creatures of the sea display a different face than in the daytime. You will be able to see their activities at night and how they sleep.

At night, it is also ideal for romance, and this is the best time for a date.

Date in Kaiyukan | Japanesquest


The main theme of Kaiyukan is the Gaia hypothesis, that the Earth is a single living entity.

At Kaiyukan, you will not only see a variety of oceanic life forms in a natural environment, but you will also experience the magnificence and mystery of life.

Did You Know?

did you know? | Japanesquest

They have a one-day pass called the “Osaka Kaiyu Ticket,” which includes unlimited entry to the Osaka Kaiyukan Aquarium and unlimited rides on the Osaka municipal transportation network. For more details, please refer to the Kaiyukan website.

We recommend you first visit Kaiyukan during the daytime, so you will be able to see feeding time, which occurs 2 to 3 times a day.

Hours Open:
10:00 - 20:00
2,300 yen