A jellyfish floats through its basin at Qingdao Aquarium in Qingdao, east China's Shandong Province, May 15, 2011. The Aquarium presents four different species of jellyfish as of now. (Xinhua/Niu Shupei)

Jellyfish float through their basin at Qingdao Aquarium in Qingdao, east China's Shandong Province, May 15, 2011. The Aquarium presents four different species of jellyfish as of now. (Xinhua/Niu Shupei)

Jellyfish float through their basin at Qingdao Aquarium in Qingdao, east China's Shandong Province, May 15, 2011. The Aquarium presents four different species of jellyfish as of now. (Xinhua/Niu Shupei)

A jellyfish floats through its basin at Qingdao Aquarium in Qingdao, east China's Shandong Province, May 15, 2011. The Aquarium presents four different species of jellyfish as of now. (Xinhua/Niu Shupei)

A jellyfish floats through its basin at Qingdao Aquarium in Qingdao, east China's Shandong Province, May 15, 2011. The Aquarium presents four different species of jellyfish as of now. (Xinhua/Niu Shupei)