Osaka Aquarium Kaiyukan is one of the attractions in Osaka that's well worth adding to your itinerary. Before even going inside, I was drawn in by the enormous building. The aquarium is very large, and as you slowly follow the route downward, you can see marine life from all over the world. The whole visit was very interesting.
What I was looking forward to most was seeing the whale sharks in the huge tank. They leisurely swam around, and it was truly impressive when they passed right beside me. Besides the whale sharks, there were also rays, penguins, sea lions, and other marine animals. Seeing all kinds of marine life up close was very soothing.
I really liked the overall atmosphere of Kaiyukan. The lighting is dim, and together with the blue glow from the tanks, walking through the aquarium feels like entering an underwater world. There are also plenty of good photo spots along the way, and before I knew it, I had spent quite a while exploring.




