The world's largest jellyfish is the Echizen jellyfish, with an umbrella cap diameter of up to 3 meters, while the world's smallest jellyfish is the Irukanji jellyfish distributed in the waters of australia's Great Barrier Reef, with an umbrella cap diameter of only a few centimeters, less than the size of a human fingernail. Although this jellyfish is small, it is quite toxic, and the last time it is stung, it is enough to be fatal.
Morphological characteristics
There are two types of living jellyfish currently found in Ilukanji jellyfish, they are very small, not as large as a human fingernail cap, and the whole body is transparent, which is difficult to see with the naked eye. Their umbrella bodies are cuboid in shape and have four sides, each with a set of eyes. In addition to the clusters of spine cells on the tentacles, the Irukanji jellyfish also have thorn cells distributed on their umbrella covers.
Reason for the name
The name of the Irukandji jellyfish comes from the Australian aboriginal tribe Irukandji, and because this jellyfish can kill people in the "invisible", it has been passed down in this tribe as an invisible kraken that can kill people. Irukanji jellyfish are mainly found in the waters of australia's Great Barrier Reef, although there have been similar cases of being stung by such jellyfish in the United States and Japan.
Introduction to toxicity
Although the Irukanji jellyfish is petite, the toxicity contained in the body is very strong. After being stung by this jellyfish, only a slight stinging pain is felt at first, but as the venom slowly spreads, the pain of the injured person will become more and more intense, and the whole person will be placed in the stove to burn, and accompanied by a rise in blood pressure, rapid heartbeat and other situations. For people with a history of heart disease, this poison can easily cause heart paralysis, which can be life-threatening.
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