|An adult Aurelia medusa|
Aurelia is a genus of scyphozoan jellyfish (Cnidaria, Scyphozoa). There are at least 13 species in the genus Aurelia including many that are still not formally described. It has been suggested that Aurelia is the best-studied group of gelatinous zooplankton, with Aurelia aurita the best-studied species in the genus; two other species, Aurelia labiata and Aurelia limbata have also been investigated (studies summarized by Arai). Since most previous studies of Aurelia were done without the benefit of genetic identification, one cannot positively attribute the results of most research to the species named. Species of Aurelia can be found in the Atlantic Ocean, the Arctic Ocean and the Pacific Ocean, and are common to the waters off California, Japan, Korea, Australia, New Zealand, the Black Sea, Indonesia, the East Coast of the United States as well as Europe. Aurelia undergoes alternation of generations, whereby the sexually-reproducing pelagic medusa stage is either male or female, and the benthic polyp stage reproduces asexually.
See also 
- Dawson, Michael N (2003). "Macro-morphological variation among cryptic species of the moon jellyfish, Aurelia (Cnidaria: Scyphozoa)". Marine Biology 143 (2): 369–379. doi:10.1007/s00227-003-1070-3.
- Dawson, Michael N. "Aurelia species". Retrieved 2008-08-12.
- Arai, Mary Needler. A Functional Biology of Scyphozoa. London: Chapman and Hall. pp. 68–206.
- Excellent photos of Aurelia in Norway
- Aurelia in Bermuda
- Animal Diversity Web: Aurelia aurita
- Tree of Life: Aurelia aurita life cycle
- World Register of Marine Species: Aurelia aurita
- Scyphozoan Jellyfish