JellyFish Facts

Aurelia Jellyfish

Aurelia Jellyfish picture

Aurelia Jellyfish

There are literally hundreds of thousands of jellyfish which inhabit the waters of all different depths and salinity all through the world. From lakes and rivers to the deep vast oceans, there are jellyfish to be found.

The most common jellyfish is the Aurelia Jellyfish which is commonly known as the Moon Jellyfish or Moon Jelly. This jellyfish is a translucent looking one which is generally 25-40cm across in size and has four gonads which are shaped like horse shoes and are easily visible through the top of the jellyfishs body. The jellyfish feeds itself by collecting plankton, molluscs and medusae with the mucus body and nematocyst covered tentacles which the use to capture their prey and to bring the food into their body in order to digest it. This jellyfish is just as limited in movement as most other jellyfish with only the ability to drift with the currents and float in the waters.

The Aurelia jellyfish do not have any respiratory parts in their anatomy such as lungs, gills or trachea as you would expect to find in other marine creatures. This organism is only small which allows it to breath by diffusing oxygen from the water through the thin membranes. Using the gastro vascular cavity, oxygenated water of a low oxygen density can be expelled and the high oxygen content water can come into the body of the jellyfish by cilated action which then increases the diffusion of oxygen through the cell. These jellyfish are either male or females. They do not change gender nor are the dual gender.

As with many sea dwelling creatures, the moon jellyfish does in fact have many predators. Ocean sunfish, leatherback sea turtles, scyphomedusae, hydromedusa are all predators for these jellyfish and they are also often targeted by sea birds which may actually be attracted to attacking the jellyfish purely in order to get to the amphipods and other small sized arthropods which are frequently found on the bodies of the Aurelia. Birds do quite a high amount of damage to the jellyfish when trying to get to their real targets and the results can often be found in the form of deceased or severely injured jellyfish stranded on the shores.

These jellyfish live for a few months and not usually more than six months in the wild but some which are held in public aquariums and cared for quite well have proven to live for several years. In their wild environment the moon jellyfish find that the warmer water towards the end of summer combined with the daily reproduction schedule and a lower level of food for repairing their tissues leaves them much more susceptible to diseases such as bacterial and other problems which are likely to end their lives. These jellyfish are one of the cheaper species which have been sold at many venues such as online and in markets as it is a very common species and not unusual to see. These jellyfish aren't toxic if stung and may simply cause a slight irritation.

For more information on this jellyfish and many others take a look at our Jellyfish Species list section and learn more About Jellyfish

Learn more about Jellyfish, different Jellyfish Species, general Jellyfish Information, Jellyfish Pets and Jellyfish Safety

Written by and Sudarsana Sinha.

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