Jellyfish is known as one of the marine animals and has existed in bodies of water over millions of years, as its presence on the surface of the globe dates back to before the dinosaurs. Jellyfish generally live in both cold and warm ocean waters, and in deep waters, as well as spread on the coasts, and follow the invertebrate family. Jellyfish, they are known for feeding on fish, shrimp, and crabs, in addition to small plants, and it is worth noting that they are also used for treatment according to Chinese medicine.[1]

Jellyfish multiplication

The process of jellyfish reproduction begins after the adult male releases the sperm into the water, then these sperms swim to reach the female, to fertilize the eggs, and after a while dozens of jellyfish larvae can hatch at once, as these larvae swim and search for jellyfish. A hard surface like rocks to be stabilized on, where it gathers at this stage to form a hollow cylindrical body called (in English: polyps) containing a nozzle from the top, and continues its growth and is called at this stage as (ephyrae) and within several weeks these jellyfish mature to become adults, They begin to separate from each other to swim away, and then live for a period of time that may reach three to six months.[2]

Jellyfish stings

Jellyfish are famous for stinging people who swim or dive in sea water. When they meet them, they are exposed to injecting poison through thousands of stinging needles spread in a prickly manner on the jellyfish’s body appendages. In addition to the area of ​​the affected area and the duration of exposure to the sting, some of these stings are slight and appear in the form of a reverse reaction represented by redness, and skin irritation in the affected area with itching or swelling, and what is moderate, represented by a comprehensive disease in all parts of the body such as difficulty breathing, and fainting. Nausea and vomiting, headaches, muscle problems, as well as heart diseases, and in general, these stings can be treated at home, but some severe cases may require medical intervention.[3]

the reviewer

  1. ↑ “Jellyfish”,, Retrieved 8-1-2018. Edited.
  2. ↑ Stephanie Watson (22-9-2006), “How Jellyfish Work”,, Retrieved 8-1-2018. Edited.
  3. ↑ “Jellyfish stings”,, 10-6-2017, Retrieved 8-1-2018. Edited.

What is jellyfish

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