[3] The aquarium is accredited as a Museum-equivalent facilities by the Museum Act from Ministry of Education, Culture, Sports, Science and Technology.

[5][6] Total floor area 18,000 m2 (190,000 sq ft) total tank vol 12,000,000 litres (3,170,000 US gal) Aqua stadium [7] "The world of dreams and healing delivered by dolphins" An aquarium centered on dolphin and Ocean Sunfish exhibits that opened on July 16, 2004.

The edge of the aquarium is designed to be low so that people can observe the sea animals on display up close.

Total water volume 3,700,000 litres (977,000 US gal)[10] Aquarium with the concept of "sea education" opened on March 8, 2013.

[14] In 2022, the aquarium opened the "Mijikana Marine Life Institute" in collaboration with the Tokyo University under the concept of "Let's have fun learning about the SDGs.

[15] About 90 animals died while rare deep-sea creatures were being transferred from an outside laboratory to Yokohama Hakkeijima Sea Paradise.

The cause of the death seems to be that the water temperature rose due to a mechanical failure, but it received a lot of criticism from animal rights groups.

[19] [19] [19] [20] [21] [22] Aqua Resorts Shop and amusement In March 1988, the business was started by nine companies centered on Seibu Group and Prince Hotel.