Izu Mito Sea Paradise is an aquarium with a long history for Japan. It opened its door in 1930 as the Nakanoshima Aquarium. In its days as the Nakanoshima Aquarium, it was the first in the world to raise whale sharks and left behind valuable results for the world. The facilities were built taking advantage of a natural inlet. In addition to exhibiting the rich variety of fish in Suruga Bay, the deepest in Japan, Izu Mito Sea Paradise is also renowned for performances by dolphins and other marine animals.