Size: A moon jelly can range in size from 2 to 15 inches in diameter Range/Distribution: Moon jellies are found in coastal regions worldwide
Appearance: An adult moon jelly is commonly identified by the appearance of 4 horseshoe shaped reproductive organs which are visible through their clear bell. The reproductive organs of the animal are located near the bottom of the stomach so when the jelly feeds the area around the gonads will take on the color of the prey. Moon jellies have small tentacles lining the bell and distinctive oral arms, which assist in feeding, draping from the center of the bell.
Habitat: Jellies are found in water with temperatures ranging from 48ْ -66ْ F (but can with stand water temperatures between 21ْ - 88ْ F). These amazing invertebrates can even live in brackish water (a mixture of fresh and salt water); however, the bell will take on a flattened appearance when in areas of low salt concentrations.
Prey: The moon jelly is a carnivorous animal which preys on small planktons such as larval crabs, shrimps and fish eggs. Although movement is mostly dictated by the currents, a moon jelly can move into areas abundant with prey by pulsing their bell. Although prey may be stung by the stinging cells (nematocysts) that line the tentacle, most become entangled in the mucous layer which covers the animal. Food is then moved along eight canals which deposit food into the stomach.
Predators: Moon jellies are preyed on by sea turtles, shore birds, fish species and other jelly species.
Life Span: Moon jelly adults may live for more than a year in an aquarium while the polyp can live up to 25 years.