The aquarium shows different habitats in 16 basins, along with the respective sea creatures. The habitats range from the Pacific Ring of Fire to the Pacific Ocean. The largest basin contains 5,400 cubic meters of water and is home to fish such as the manta ray and the whale shark.
The Kaiyukan Aquarium was opened on July 20, 1990 and, with a total water volume of 11,000 tons, is one of the largest urban indoor aquariums in the world. Kaiyukan focuses on the Gaia hypothesis (according to James Lovelock), according to which "the earth's volcanoes and all living things on them interact with each other and thus form a single living being." The theme of the aquarium is based on this principle. de.m.wikipedia.org/wiki/Kaiy%C5%ABkan