Moon Jellyfish or Aurelia aurita are around 5-40 cm wide and glow in the dark. They swim by pulsating the bell-shaped upper part of the body. Their habitat is the Atlantic, Pacific and Indian Ocean and are found near the coast, in mostly warm and tropical waters. They can withstand temperatures as low as -6°C and as high as 31°C. The moon jelly is carnivorous and feeds on small plankton such as mollusks, crustaceans, tunicate larvae, copepods, rotifers, nematods, young polychaetes, protozoans, diatoms and eggs. These were photographed in the Oceanarium at Valencia City of Arts and Science.