Also known as the Kaiyukan Aquarium, it is one of the world’s largest, and a model of Japan tourism at its best. Of all the attractions at the Osaka Wan harbor area, the Osaka Aquarium is still the most famous and unique Japan tourism idea during your stay in Osaka. Kaiyukan literally means, “playing in the Sea Pavilion” and is one of the largest aquariums in the world. Here, marine life is contained within 15 tanks, each representing a region of the Pacific Rim on which Japan sits. The aquarium is centered around a single huge tank holding 5,400 tons of water and containing 580 species and 30,000 Pacific Rim marine animals.
The main attraction in the Osaka Aquarium is an 1,800-pound whale shark named Yu-chan. Whale sharks are the largest fish on earth. Other highlights at the Osaka Aquarium include: sea otters, King penguins, Gentoo penguins, dolphins, jelly fish and sea lions.