Aquarium

Visitors stand watch blue fin tunas in a 2,200-ton tank at Tokyo Sea Life Park in Tokyo, Monday, July 7, 2014. The tank is designed to create artificial flow of the ocean to keep the fish alive.

Koji Sasahara/AP

A visitor watches blue fin tunas in a 2,200-tonne tank at Tokyo Sea Life Park on Monday.

Visitors look at fish in the aquarium inside the Chimelong Ocean Kingdom in Zhuhai on April 29, 2014.  The park which claims to be the world's largest ocean theme park was built at an estimated cost of USD3.3 billion and opened in March of this year.

Mark Ralston/AFP

Aquarium visitors take in the submarine view at the Chimelong Ocean Kingdom in Zhuhai, Guangdong province, China on Tuesday. The ocean theme park claims to be the world’s largest and opened in March.

Jelly fish tank at Beijing Aquarium...epa03822115 People take pictures of jelly fish inside a tank at the Beijing Aquarium in Beijing, China, 12 August 2013. The aquarium, part of Beijing Zoo, is considered the biggest in China.  EPA/DIEGO AZUBEL

Diego Azubel/EPA

Visitors take pictures of jellyfish inside a tank at the Aquarium in Beijing. which is part of Beijing Zoo and considered the biggest in China Read more

A diver performs with sardines as part of summer vacation events at an Coex Aquarium in Seoul, South Korea, Wednesday, July 31, 2013.

Ahn Young-joon/AP

A diver performs with sardines as part of summer holiday events at Coex Aquarium in Seoul, South Korea.

Pedestrians stop and look at tropical fish from Japanese southwestern island of Okinawa at an outdoor aquarium in central Tokyo, Japan, 19 July 2013. About 400 from 15 species are swimming in the tank of the temporary aquarium on display until 01 September to attract visitors and business people in central Tokyo.

Kimimasa Mayama/EPA

Pedestrians stop and look at tropical fish from the Japanese southwestern island of Okinawa at an outdoor aquarium in central Tokyo. About 400 from 15 species are swimming in the tank of the temporary aquarium on display until September 1 to attract visitors and business people.