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Kaiyukan is an aquarium that faithfully recreates the natural environment of the world’s largest ocean, the Pacific Ocean, and its surrounding waters. We have selected specific regions along the Pacific Ring of Fire—the volcanic belt encircling the Pacific—and recreated them in large tanks. The tanks within the facility are arranged so that each corresponds to an actual geographical location in the Pacific Ocean.Starting with the “Pacific Ocean” tank in the center of the building, where whale sharks swim gracefully, the aquarium houses and displays approximately 30,000 creatures representing 620 species across various tanks, including the “Japanese Forest” tank with its flowing waterfall and lush vegetation, and the “Tasman Sea” tank, home to bottlenose dolphins. Other popular exhibits include the “Jellyfish Galaxy,” which explores the allure of jellyfish, and the “Arctic Circle” tank, home to ringed seals and other species.