A woman looks at jellyfish during a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo July 6, 2015. (Photo by Toru Hanai/Reuters)

Visitors look at jellyfish during a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo July 6, 2015. (Photo by Toru Hanai/Reuters)

A man looks at jellyfish during a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo July 6, 2015. (Photo by Toru Hanai/Reuters)

Visitors look at jellyfish during a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo, July 6, 2015. (Photo by Toru Hanai/Reuters)

A woman looks at jellyfish during a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo, July 6, 2015. (Photo by Toru Hanai/Reuters)

Dolphins jump out of the water in front of models dressed as a bridal couple at a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo, July 6, 2015. (Photo by Toru Hanai/Reuters)

Dolphins and whales jump out of the water at a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo, July 6, 2015. (Photo by Toru Hanai/Reuters)

A dolphin jumps out of the water at a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo, July 6, 2015. (Photo by Toru Hanai/Reuters)

Dolphins jump out of the water during a media preview for the Epson Aqua Park Shinagawa aquarium's re-opening in Tokyo, July 6, 2015. (Photo by Toru Hanai/Reuters)

Dolphins jump into the air during a press preview of the soon to be re-opened Aqua Park Shinagawa in Tokyo on July 6, 2015. The aquarium will re-open on July 10 with new attractions including a pirate ship ride and a merry-go-round. (Photo by Toshifumi Kitamura/AFP Photo)