Osaka Aquarium or Kaiyukan 〔海遊館) is one of the most famous tourist attractions in Osaka and probably in the whole Japan for aquariums. It is located in Osaka bay area. This aquarium is famous for its various displays of marine life which is organized in a very impressive way.
When I was living in Beppu city (別府市), Oita prefecture (大分県), I visited an aquarium called ‘Umitamago’ (Umi 海 = ocean, Tamago卵 = egg). 
The aquarium is obviously not as big as others in the bigger cities but the fish tanks were arranged nicely and with its location on a scenic beach, the atmosphere is great. I got to shake hand with a cute seal when I was on an outdoor stadium for a show and had club sandwiches in the terrace near the beach. The entrance fee was free that day because we got two tickets from the owner of the place by chance. 😉 I had a great time. It was a lot of fun even in a small city aquarium so I had high expectations for this well-known Osaka Kaiyukan.
Outdoor show at Umitamago
My friend observing marine life inside Umitamago
I went to Kaiyukan with the same friend I went to Umitamago with. The difference was that we are a few years older; both have graduated and now working in a different country. Since my friend decided to visit from Korea, I was especially excited to spend the day catching up and having fun. This was actually my second time at this aquarium. The first time was 5 years ago although I could barely enjoy the place or remember much having been so sick and fainted inside the aquarium (no joke!). So this time was sort of like my first time there. It was a rainy day so we thought we could enjoy the day being inside.
We started from Osaka station and took a train to Bentencho station (弁天町). From there, we took Osaka municipal subway Chuo line (中央線) toward Cosmo square to Osakako station (大阪港 Osaka port). It took only about 18 minutes. Then, we walked to the aquarium in the rain, had some ice cream (soft cream ソフトクリーム), paid for the entrance and went in. There were tons of people inside!
The exhibitions were divided according to the Pacific Rim or the Ring of fire from Japan forest to Antarctica to The Great Barrier Reef and others. There were various kinds of sea animals; dolphins, penguins, sharks and so many others we are familiar with or some that we had never heard of. With the massive amount of people, it was hard to view the animals at first but there seemed to be less people as we moved along the route. The aquarium has 8 floors which go in spiral once we move forward so we could observe marine life from many angles. The central tank is one of the main attractions. It is 9 meters deep and is visible along the route.
I could observe so many sea animal activities; dolphins playing water polo (in their way), penguins community gathering, huge Japanese crabs showing power, jelly fish floating up and down, and so many other interesting marine life.
Right before the exit, there is a big fish tank which contains mainly sharks and stingrays. They allow people to touch the fish in this tank with a warning of ‘Do not touch the sharks in the head, please only touch the back’. I tried…but failed. 
I blame the announcer who kept announcing the warnings. 😛 Despite the fact that there were so many people, I did enjoy the place although I could say that 2,300 yen for the entrance is a little bit expensive. The only thing I wish they had is an outdoor show. Apparently, there are other attractions besides the exhibitions, too. There are cruises, Ferris wheel and other activities you can enjoy. This place can be really good for families with kids for a day out activity.
The most surprisingly thing that happened there was that there was a wedding inside the aquarium! We were walking along the route when we heard someone ringing the bell and shouting ‘現在海遊館の中で結婚式を行っております’ (genzai kaiyukan no nakade kekkonshiki wo okonatteorimasu) meaning ‘There is currently a wedding inside Kaiyukan at the moment’. Then, we saw a couple wearing a suit and a wedding gown walking out with some people following behind. What a very strange place to get married but I’m sure it is something they’ll never ever forget.
A couple having their wedding at the aquarium
Access:
Take Chuo Line and get off at Osakako (Osaka Port) station.
Approx. 12 min. from Hommachi (Midousuji line) to Osakako station.
Approx. 18 min. from Umeda (or Osaka in JR line) to Osakako station.
Approx. 35 min. from Shinosaka (Shinkansen JR line) to Osakako station.
Approx. 37 min. from Universal City (JR line) to Osakako station.
Approx. 75 min. from Kansai International Airport to Osakako station by JR line and Subway.
Operating hours: 10 am – 8 pm
Entrance fee （one time – adult): 2,300 yen
Website: http://www.kaiyukan.com/language/eng/index.htm
Discount ticket from Klook -> here! (free bonus credits when downloading their app and input this code: L2AI9)
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Categories: Japan, Japan Destinations, Kansai Region
Luvniku 
Hi Luvniku. Your post reminds me of when I visited the Boston Aquarium (where I’m from, although I also live in Japan now) with my husband, who is from Osaka. He kept looking at all the fish displays and saying “Mmm, looks delicious!” I couldn’t believe it. “Seriously, love?” I asked him. “Ya! Looks good!” he insisted. I tried to point out that, when I see a cow in a field, I never think “Oh, looks delicious” even though I love hamburgers (and niku, like your blog name!), but he wouldn’t be swayed. “Well, we Japanese, we really like fish” was all he could offer…
Hi Tracy! Thanks for dropping by.
I recently moved to Osaka and before my time is over here…I want to explore a lot more places & try their best food. I don’t think I ever saw a living thing and thought it’s delicious either! So funny. 🙂