JellyFish Facts

Jellyfish Types

Jellyfish Types picture

Jellyfish Types

Jellyfish can be found in every ocean in the world. Jellyfish inhabit all levels of water, right from the surface of the ocean to the very depths. You may find it hard to believe, but there are more than 1500 known species of jellyfish in the waters of the world. Although jellyfish are mainly found in marine waters, some species of jellyfish also exist in freshwater lakes.

While some species of jellyfish can be found in the warm, temperate waters of tropical oceans, some other species of jellyfish can be found in the cold, frigid waters of the North Pacific Ocean. While some species of jellyfish are smaller than your thumbnail in size, some other species can grow to over hundreds of feet in diameter and length of tentacles. While most jellyfish are harmless to human beings and may cause a minor sting at most, some species of jellyfish are capable of killing human beings in less than 3 minutes. There are many different species of jellyfish in our oceans, embodying a variety of different characteristics. Some of the most popular jellyfish from around the world include:

Moon Jelly (Aurelia Aurita): This is perhaps the most common and recognizable jellyfish in the world. If you have seen a jellyfish in a public aquarium, there is a very high likelihood that you have seen the moon jellyfish, as they are very commonly bred in aquariums. Moon jellyfish are semi-transparent and have a shallow saucer-like bell shape. Their gonads are visible through their body and they look like four pink horseshoe markings. The moon jellyfish varies in size usually between 6 to 8 inches and 20 inches in diameter. Moon Jellyfish stings are mild and non-fatal.

Lions Mane Jellyfish/Winter Jelly (Cyanea capillat): Commonly seen in popular fiction and film, this jellyfish derives its name from it appearance as well as its preference for the cold, frigid waters of winter months. Its bell shaped is the most common representation we see of jellyfish in popular media. This bell is usually about 6 to 8 inches in size. The Lion's mane jellyfish has reddish-brown oral arms and eight clusters of tentacles hanging underneath the oral arms. The sting of the Lions Mane Jellyfish is relatively mild and may cause a rash which is stinging, rather than painful.

Portuguese Man of War (Physalia physalis): The Portuguese Man of War is not even a jellyfish, although it is widely considered to be one. Four individual polyps that perform separate individual functions form a Portuguese Man of War. Together the four polyps act as different parts of the organism and they also appear exactly like a jellyfish. The bell of the Portuguese Man of war is usually purple-blue in color and can reach the size of 10 inches in diameter. Their tentacles can be as long as 30 to 60 feet in length. While the sting of the Portuguese Man of War is rarely fatal, it can be extremely painful and induce symptoms like shock, chills, fever, etc. apart with an extremely painful rash.

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

Written by and Sudarsana Sinha.

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