Osaka Aquarium Kaiyukan

Haeyugwan is a large aquarium in Osaka that displays marine life including whale sharks and squid. Visitors descend a spiral ramp from the top floor around a cylindrical main tank, viewing it from multiple angles. Time-designated tickets bought in advance on the official website allow entry by QR code without waiting, and one full loop takes about an hour. On-site tickets are sold in divided entry times, and waiting can be done at a nearby shopping mall, which makes viewing uncomfortable when it is crowded.