The park's opening anniversary event, "All About MAGURO," will be held!
event
September 10, 2026
October 10th is the anniversary of the opening of Tokyo Sea Life Park. It is also "Tuna Day" (*). The aquarium will be holding a tuna-themed anniversary event, "All About MAGURO," for three days from October 10th (Sat) to 12th (Mon/Holiday). Also, as in previous years, admission will be free on the anniversary day, October 10th (Sat)!
Tuna are one of the main attractions at our aquarium. We'll show you everything you need to know about them. Please come and visit us!
This day was established by the Japan Skipjack and Tuna Fisheries Cooperative Association in commemoration of a poem written by Yamabe no Akahito, a poet of the Nara period, on October 10th, 726 AD (Jinki 3), about a region that prospered from tuna fishing.
Date and Time
October 10th (Sat) - 12th (Monday/Holiday), 2026
Content
"Tuna Bingo" distribution
Let's have fun observing the swimming and body structure of Pacific Bluefin Tuna using a bingo-style self-observation sheet! Participants will receive an original wallpaper as a gift.
October 10th (Sat) - October 12th (Monday/Holiday)
9:30 AM - 5:00 PM (Distribution until 4:00 PM)
In front of the escalator on the 2nd floor of the main building
First 3,000 people each day
Information Desk Mini Special Exhibition: "Tuna Peeking"
How big are tuna eggs? Do they have teeth? We'll introduce you to the secrets of tuna that you can't easily see in aquariums, using specimens. If you have any questions about tuna, please feel free to ask our staff who are always on hand.
October 1st (Thursday) - October 31st (Saturday)
10:00 AM - 4:15 PM
Information Desk 2nd Floor, Main Building
*We will be closed on Saturday, October 10th due to expected crowds.
Learn more about tuna! "Tuna Lab"
This program introduces the ingenuity and techniques developed so far in raising tuna! How are the tuna transported to the aquarium? How much food is prepared? The program also features the tools that animal keeper use on a daily basis.
We will also introduce various tuna research projects being conducted by the Fisheries Research and Education Agency.
October 11th (Sunday), 12th (Monday/Holiday)
10:00 AM - 4:00 PM
Lecture Room, 2nd Floor, Main Building
Anyone can participate.
National Research and Development Agency, Fisheries Research and Education Agency
Special guided tour: "Exploring the hidden side of tuna"
We'll give you a tour of the back of the aquarium, a place you don't usually get to go.
October 11th (Sunday), 12th (Monday/Holiday)
• First session: 10:30 AM - 11:00 AM (Registration starts at 10:20 AM)
• Second session: 1:00 PM - 1:30 PM (Registration starts at 12:50 PM)
・3rd session: 3:30 PM - 4:00 PM (Registration starts at 3:20 PM)
Counter inside the "Glass Dome" on the 3rd floor of the main building
Elementary school age and older / 10 participants per session (by lottery)
*Due to the narrow passageways and stairs, participation is not possible with wheelchairs or strollers.
Tuna Ultra Quiz
Try this "YES or NO" quiz about tuna. If you answer correctly in a row, you can participate in a behind-the-scenes tour of the aquarium.
October 11th (Sunday), 12th (Monday/Holiday)
2:00 PM - 2:20 PM (Registration opens at 1:50 PM)
Sky Square
*Cancelled in case of rain
*The behind-the-scenes tour of the aquariums ends at 3 PM.
Fantasy musical "Honu by the Sea"
A musical about marine conservation, set against the backdrop of the Hawaiian ocean, is coming from Hawaii, USA.
The basic dialogue is in English, but we will also incorporate Japanese songs into the performance. The content is enjoyable even for young children, so please come and participate with your family.
* "Honu": Hawaiian for sea turtle
Saturday, October 10th
・First session: 10:00 AM
・Second session: 11:00 AM
・3rd session, 3 PM
・4th session, 4 PM
October 11th (Sunday), 12th (Monday/Holiday)
・First session: 11:00 AM
・Second session: 13:00
・3rd session, 3 PM
*Each session is approximately 25 minutes long.
Sky Square
*Cancelled in case of rain
Anyone can view it.
Johnson Entertainment LLC
A teenage boy living in Hawaii helps a starfish that has washed ashore return to the sea, and in the process, he makes a wish: "I want to swim freely in the ocean for just one day." In return for his help, the starfish grants the boy's wish and invites him into the underwater world. The boy encounters a variety of fascinating marine creatures and learns about the many things that happen in the ocean.
About Honu by the Sea
Honu by the Sea's mission is to "nurture children who cherish the ocean." Created by Hawaii-based music producer, composer, and singer Johnson Enos, the show aims to instill in children a love for the ocean and marine life. Through songs, dances, and colorful costumes, it provides children with an opportunity to learn about the marine environment and marine life while having fun. The show was performed annually at Tokyo Sea Life Park on its anniversary from 2016 to 2019, and is now returning after a seven-year hiatus.
Past Examples
Examples include the Waikiki Aquarium (Hawaii, USA), the Smithsonian National Museum of Natural History (Washington, D.C., USA), the International Union for Conservation of Nature (IUCN) International Conference (Australia, 2014), the 2015 Blue Ocean Film Festival (Monaco), the Seattle Aquarium (Washington, USA), the Vancouver Aquarium (Canada), and the Aquarium of the Pacific (California, USA).
others
Due to the expected high volume of visitors on Saturday, October 10th, which is a free admission day, we will be closing or canceling some of our regular exhibition facilities and programs as follows to ensure safety. We appreciate your understanding.
• "Bioluminescent Organisms" Corner
- "Shiodamari" corner
• Information Desk (A temporary question counter will be set up next to the information counter on the 2nd floor.)
• Various guided tour
- Interaction program at "Shiodamari"
• Bioluminescence experiment of "Sea-firefly"
- Explanation program for "Ikimono Majika"

