About Osaka Aquarium

This is not the official website

This website is an independent visitor guide. It is not operated by, affiliated with, authorised by, sponsored by, or endorsed by the aquarium or its operator, Osaka Aquarium Kaiyukan Co., Ltd. The attraction's official name is 海遊館 and its only official website is kaiyukan.com.

We do not sell admission tickets and we are not an agent of the aquarium: any ticket you book through a link here is sold by a third-party platform under its own terms. All names, marks and logos referring to the attraction belong to their owner and are used here only to describe the place this guide is about.

Why we built this site

Booking a ticket to Osaka Aquarium Kaiyukan should be simple — but the number of options, combo deals, and queue-management tips scattered across review sites makes it harder than it needs to be. We pull everything into one place: what's inside, which ticket to buy, when to go, and how to skip the box-office queue.

All information is based on current operator data, published admission prices, and verified traveler reviews. We update details regularly so the page reflects what you'll actually experience.

What we cover

Our guide covers everything a first-time visitor needs:

• The 15 marine zones and what you'll find in each
• The Pacific Ocean tank — whale shark feeding times and best viewing spots
• Admission prices for all visitor types (adults, children, seniors)
• Opening hours, recommended visit length, and least-crowded times
• How to get there from Osaka city centre by Metro, JR, and water bus
• The difference between at-door tickets and online pre-booking

How we make money

This site is free to use. When you book through a link on this page, we may earn a small commission from the ticketing platform — at no extra cost to you. It never changes the price you pay, and it never influences what we recommend.

Our guides reflect real visitor experiences and current facts, not commissions.

About the author

This guide is edited by Hana Yoshida, an Osaka-based travel writer specialising in family attractions and marine conservation in Japan. She has visited the aquarium multiple times across different seasons and writes from first-hand experience and current operator data.