Noms alternatifs : Aurelia aurita, common jellyfish, moon jellyfish, moon jelly, saucer jelly
The moon jelly an almost entirely translucent jellywifhs measuring up to 40 cm (16 in) in diameter.
The jellyfish has quite a large distribution, being found in the North, Black, Baltic and Caspian Seas, as well as the Northeast Atlantic, Greenland, northeastern USA and Canada, Northwest Pacific and South America.
Moon jellies feed on mollusks, crustaceans, tunicate larvae, rotifers, protozoans, diatoms, fish eggs, and other small organisms.