Aurelia aurita

35cm
0-1250m
1076 sites
Ulmaridae
Imagine drifting through the blue, sunlight dappling around you, when suddenly you're surrounded by pulsating, translucent discs – you've encountered the Common Moon Jelly, *Aurelia aurita*! These ethereal creatures, typically around 35cm but sometimes reaching up to 50cm, are a common sight in coastal waters and can even be found in estuaries and mangroves. While they might not be the star attraction of a reef, encountering a bloom of Moon Jellies can be a mesmerizing experience. They drift with the currents, their delicate bells pulsing rhythmically, creating an underwater ballet. Divers usually encounter them in large groups, especially during blooms, adding an otherworldly feel to any dive. While they can sting, their sting is generally mild and barely noticeable to humans. So, keep an eye out for these gelatinous beauties – they're a reminder of the ocean's incredible diversity!
The Common Moon Jelly is easily recognized by its translucent, saucer-shaped bell. Look for the four horseshoe-shaped gonads located in the center of the bell; these are usually a creamy white or pale pink. Fine, short tentacles fringe the edge of the bell. Unlike some jellyfish, Moon Jellies lack long, trailing tentacles, making them appear quite delicate and less intimidating in the water. Their gentle pulsing motion as they drift is also a key identifier.
4 sites