Osaka Aquarium Kaiyukan is one of the largest and most immersive aquariums in Japan. With the theme of "Pacific Rim", the museum has 15 large exhibition areas and a main tank - 9 meters deep, 34 meters long, and holding 5,400 tons of water, where you can see about 620 species and 30,000 marine creatures such as whale sharks and stingrays. The tour route spirals down from the 8th floor to the 4th floor, from land to the underwater world; the new interactive exhibition area also allows you to touch sharks and rays, allowing you to get close to them and admire the beauty of life and nature.