2026.06.12

news

[Important] Beware of fake ticket websites and scams.

Thank you for always using our facility. We have confirmed the existence of a fake ticket sales website (kaiyukan.world) that is falsely claiming to be an official ticket vendor for our facility, and victims are mainly coming from overseas. Official tickets for our facility are not sold through any channels other than the following official channels: Official/Authorized Sales Channels, Kaiyukan Official Website, Klook, KKday, Trip.com [Caution] You will not be admitted with an unauthorized ticket purchased from any site other than those listed above (such as SNS or resale sites). We also cannot be held responsible for any problems that may arise. If you come across any suspicious sites or tickets being sold at extremely low prices, please refrain from purchasing them. We ask for your understanding and caution so that everyone can enjoy our facility safely and securely.

2026.10.07

Living creature information

From November 8th, we will be adding creatures collected by aquarium keeper in the Arctic Region to our exhibit!

From Sunday, November 8, 2026, the "Arctic Region" Aquarium (3rd floor underwater section) will be adding 17 species and 85 specimens of creatures that live in the Arctic Region Circle, including fish, crabs, and starfish, collected by aquarium keeper in the Arctic Region. Eyeshade's Sculpin (Scorpionfish) *First exhibit at Kaiyukan Arctic Cod (Polar Cod) Kaiyukan aquarium keeper Hokkaido University's training vessel "Oshoro Maru" on an Arctic voyage survey conducted over 43 days from June 19 to July 31, 2026, and collected approximately 27 species and 370 specimens of creatures. From these, 17 species and 85 specimens (planned), including three species being exhibited for the first time at Kaiyukan, such as the "Eyshade's Sculpin (Scorpionfish)," will be added to the exhibit, bringing the total number of Arctic creatures that live in the Arctic Region to 22 species and 205 specimens (planned). In addition, to coincide with the addition of these exhibits, we will be holding a special program called "A Special Experience from a aquarium keeper 's Perspective - Arctic Creatures Edition," where you can experience the process of moving the creatures from the back tank to the exhibit tanks—a task not usually seen by the public—alongside the aquarium keeper . You will hear lectures and anecdotes from the aquarium keeper who participated in the survey, as well as get to experience the process of moving creatures collected on site to the exhibit tank. *Please check the event page for details on how to participate. Main exhibited creatures Fish Doctor (Naked Greninja) Kelp Snailfish (Snailfish sp.) Fuzzy Hermit Crab (Hermit Crab) Blue King Crab (Oil Crab) Spiny Starfish (Starfish) Sea Raspberry (Coral) *The exhibit period and number of exhibited creatures may be changed without notice depending on the condition of the creatures.

2026.10.06

Living creature information

A King penguin chick has been born.

~You can see the heartwarming scene of the parenting~ A baby King penguin was born in the "Antarctica" tank on Saturday, September 19, 2026. Since birth, the parents have been raising the baby under their belly, so it has been difficult to see, but about two weeks have passed since birth, and the baby is now occasionally peeking out from under the parents' feet. We are pleased to announce that there are now more opportunities to see the parenting, such as the parents feeding the baby mouth-to-mouth. The baby is growing well, and the aquarium keeper are monitoring its growth by weighing it every morning. King penguin chick born on September 19th (photographed on October 6th) [About the King penguin Chicks] ・Egg-laying date: Wednesday, July 22, 2026 ・Hatching date: Saturday, September 19, 2026 ・Sex: Unknown ・Weight: Approximately 200g (immediately after hatching) → Approximately 840g (as of October 6th) [Second chick] ・Hatching date: Wednesday, September 24, 2025 ・Sex: Unknown ・Weight: 192g (immediately after hatching) → Approximately 350g (as of October 7th) --> *Depending on the condition of the chicks, the exhibit may be canceled without notice.

2026.09.17

news

"Naniwa Kuishinbo Yokocho" will reopen in March 2027! ~Closed from September 29th~

The food theme park " Naniwa Kuishinbo Yokocho " within " Tempozan Marketplace " will be completely renovated to become a more comfortable and enjoyable space while retaining its Showa-era retro charm. Construction will begin in October 2026, with a reopening scheduled for late March 2027. The park will be closed from Tuesday, September 29, 2026 (excluding some stores) for renovation. This renovation will retain the Showa-era retro atmosphere while introducing seven new stores (planned) that will offer new charm and deliciousness. In terms of facilities, the passageways will be expanded to create more space, and the number of shared seats will be increased to alleviate congestion. " Naniwa Kuishinbo Yokocho " Renewal Overview Renewal Opening Date Scheduled for late March 2027 Location Naniwa Kuishinbo Yokocho , 2F Tempozan Marketplace Facility Area Approximately 1,500㎡ Closure Period Tuesday, September 29, 2026 - Scheduled for late March 2027 *Excluding some stores *Details regarding the renewal opening date and store information will be announced again as soon as they are decided. About " Naniwa Kuishinbo Yokocho" A food theme park that recreates the streetscape of Osaka around 1965, bringing together famous long-established stores from Osaka and the Kansai region. Opening Date July 20, 2002 Number of Stores 14 stores Main Stores Hokkyokusei, the birthplace of omurice, Botejyu, an okonomiyaki restaurant, etc.

2026.09.11

news

The "Tempozan World Performance Festival 2026" will be held from October 16th to 18th!

~A total of 30 performers will gather to showcase their street performances~ The "Tempozan World Performance Festival 2026" will be held at Kaiyukan and Tempozan Marketplace, featuring powerful street performances by performers active both domestically and internationally. This year marks the 34th edition of the festival, and two special performances by invited performers will be held at the Kaiyukan Hall. You can enjoy a spectacular stage show including a magic show by the highly original "KiLa" and an entertainment show by the LED performance group "XTRAP". Details will be posted on the Tempozan Marketplace website in late September. Organizer: Osaka Aquarium Kaiyukan Co.,Ltd Dates: October 16th (Fri) - 18th (Sun), 2026, 10:30 AM - 5:00 PM each day (tentative) Venue: Tempozan Harbor Village(around Kaiyukan and Tempozan Marketplace) "Rotunda Stage inside Tempozan Marketplace, in front of the main entrance", "Kaiyukan Event Plaza", "Kaiyukan Hall", etc. Admission: Free Main performers: KiLa (performing on 10/17), XTRAP (performing on 10/18), Rhythm Rice, BMX Performer YUYA

2026.09.05

Living creature information

[Limited Time Only] We are exhibiting baby Porcupinefish.

Baby Porcupinefish are on display for a limited time at the aquarium keeper counter on the 4th floor of the entrance building. These babies were born from eggs laid by Porcupinefish in the "Cook Strait" tank and have been carefully raised by the aquarium keeper in the back area. Highlights of the babies include their dark body color, which differs from that of adults, and tiny spines that can be seen upon closer inspection. Be sure to take a close look at their adorable appearance as they swim, diligently moving their tiny fins. Period: September 5, 2026 - End date TBD Location: aquarium keeper counter, 4th floor of the Kaiyukan entrance building Number of exhibited individuals: 1 (approximately 3cm in length) *The exhibit may be suddenly canceled depending on the condition of the animals. Also, aquarium keeper will be at the aquarium keeper counter during the following times. We will introduce current topics such as the animals on display and baby animals being raised in the back area. tr th, tr td { border: 1px solid #e6e6e6; } tr th { background-color: #f5f5f5; } Commentary by aquarium keeper Weekdays 13:10-14:00, 15:30-16:20 Weekends and holidays 11:00-11:50, 13:10-14:00, 15:30-16:20 Porcupinefish Scientific name: Allomycterus pilatus The English name "Porcupine" refers to a porcupine, and its entire body is covered in spines. The spines are always erect and cannot be moved. It inhabits the waters from New Zealand to South Australia, where cold ocean currents from Antarctica flow in.

2026.08.24

Living creature information

*Exhibition has ended. A large jellyfish with a diameter of 60cm has appeared! We have started exhibiting the large "Ariake Bizen Kurage (Japanese Name)".

*The exhibition of the large jellyfish "Ariake Bizen Kurage (Japanese Name)," which inhabits the Ariake Sea, has ended. We will be exhibiting it for a limited time of approximately one month. The Ariake Bizen Kurage (Japanese Name) is a large jellyfish that grows to a diameter of 60 cm and a weight of about 20 kg. In the vicinity of the Ariake Sea in Kyushu, it is caught for food in the summer. Kaiyukan has been conducting research on the Ariake Bizen Kurage (Japanese Name) in the Ariake Sea since 2001, and in 2002, it succeeded for the first time in transporting and exhibiting a large individual. This year, coinciding with the start of the "jellyfish fishing" season in the Ariake Sea, we have collected Bizen jellyfish for research and exhibition. Through this exhibition, Kaiyukan hopes to provide an opportunity for people to become interested in living creatures and the natural environment. Exhibition Period: August 22, 2026 onwards (approximately 1 month) Exhibition Location: 3F, Aquarium "Jellyfish" Exhibits: 2 individuals with a bell diameter of approximately 60cm, 1 individual with a bell diameter of approximately 30cm, total of 3 individuals *The exhibition period and number of exhibits may be changed without notice depending on the condition of the creatures. About Ariake Bizen Kurage (Japanese Name) Scientific name: Rhopilema esculentum In Japan, it is distributed only in the Ariake Sea. It is a large jellyfish that grows up to a bell diameter of 60cm and weighs about 20kg, and is called "Edible jellyfish" in English because it is edible. It is caught by gillnet fishing off the coast of the Ariake Sea from around July to October. In recent years, in order to avoid confusion with similar species, the name has been changed from a type of Bizen jellyfish to "Ariake Bizen Kurage (Japanese Name)".

2026.08.03

Living creature information

We have begun exhibiting "Clione" (sea angels) collected by aquarium keeper in the Arctic Region.

From August 2nd, 2026 (Sunday), we have begun exhibiting approximately 140 sea angels (Clione), each about 2 cm in size, collected in the Arctic Region Circle, in the "Arctic Region" section of the Aquarium . These sea angels were collected by Kaiyukan's aquarium keeper who accompanied Hokkaido University's training vessel, the "Oshoro Maru," on an Arctic expedition from June 19th to July 31st, 2026. Sea angels are a type of mollusk that does not have a shell and inhabit the Arctic Region and surrounding waters. They live by flapping their wing-like "pteropods" and drifting through the ocean. In addition to sea angels, this expedition also collected valuable fish and invertebrates that inhabit the Arctic Region, and we will announce when these will be exhibited. Details of the Arctic Region expedition and the collection of organisms can be found on the blog "Kaiyukan's Behind the Scenes." [About Clione] Clione are shellless mollusks, also known in Japan as "Clione" (naked sea slug). In Japan, they are commonly called "Clione," derived from their genus name. They inhabit cold waters such as the Arctic Region and its surrounding areas, drifting through the sea by flapping their wing-like organs called "pteropods." They primarily feed on the sea snail *Lysimachia japonica*, another type of mollusk, catching them by extending six tentacles (buccal cones) from the mouth on the top of their heads. *Please note that the exhibition period and number of exhibits may change without notice depending on the condition of the organisms.

2026.07.29

news

*This event has ended. Held on August 5th at the Kaiyukan Hall! Symposium "Now is the time to learn about creating a fish-filled ocean" to connect the rich Osaka Bay.

aquarium keeper from Kaiyukan will be participating as panelists! A symposium hosted by the Osaka Prefectural Institute of Environmental Agriculture, Forestry and Fisheries (Osaka Prefectural Independent Administrative Agency) will be held on August 5th. aquarium keeper from Kaiyukan will be participating. Participation is free, so please come and join us. For details of the symposium, please see below. → [Osaka Environmental Agriculture and Fisheries Research Institute HP] We will hold the symposium "Creating a Fish Garden Sea: What We Need to Know Now" (Osaka Environmental Agriculture and Fisheries Research Institute Symposium 2026) to connect the rich Osaka Bay Date and Time Wednesday, August 5, 2026 *Concluded Symposium: 1:00 PM to 3:45 PM (Registration starts at noon) Poster session: 12:00 PM to 12:45 PM, 3:50 PM to 4:45 PM Venue Kaiyukan Hall (2nd floor of the Kaiyukan entrance building. Area before entering the aquarium) Fee Free (If you wish to enter Kaiyukan, a separate admission fee is required) How to apply Please check here Application deadline Sunday, August 2, 2026

2026.07.16

news

Osaka City Premium Discount Vouchers can be used.

From July 16, 2026 to January 15, 2027, Osaka City Premium Gift Certificates can be used at select stores within the Kaiyukan. Payment with these gift certificates is only accepted via the smartphone app region PAY. [Eligible Stores] Kaiyukan Ticket Counter, Kaiyukan Official Shop, Kaiyukan Official Museum Shop. For details on how to use the gift certificates, please contact each store. (Kaiyukan Information: 06-6576-5501) *These gift certificates cannot be used to purchase web tickets.