Osaka Aquarium

Osaka Aquarium Kaiyukan (海遊館, Kaiyūkan) is a world-class marine science attraction in the Osaka Bay Area, renowned for its striking architecture and immersive visitor experience. The journey begins on the 8th floor, where guests descend a spiraling pathway that wraps around a massive, nine-meter-deep central tank representing the Pacific Ocean. Swimming inside this colossal tank is the aquarium’s star resident—the majestic whale shark—accompanied by rays, hammerhead sharks, and tuna, offering breathtaking views from multiple levels. Each floor reveals a new layer of ocean life, simulating a descent through the sea’s depths and creating a captivating, multi-sensory experience for all ages.

The aquarium showcases the remarkable biodiversity of the Pacific Ring of Fire, with each exhibit focused on a specific region—from the frigid waters of the Aleutian Islands to the vibrant coral reefs of the Great Barrier Reef. Many tanks span several floors, offering unique vantage points to observe creatures such as sea otters, penguins, jellyfish, and Japanese spider crabs. With more than 15 beautifully designed habitats, interactive learning zones, and calming ambient lighting, Osaka Aquarium Kaiyukan seamlessly blends entertainment with marine education, making it a must-visit destination for families, solo travelers, and ocean enthusiasts.