JellyFish Facts

Poisonous Jellyfish

Poisonous Jellyfish picture

Poisonous Jellyfish

Most jellyfish are fairly harmless and don't attack humans. However, they usually have stingers (though there are some that don't) that provide protection and help procure food. These stingers have low toxicity levels and are normally harmless to humans. In spite of this, quite a few jellyfish stings can cause a great deal of discomfort, if not always pain, and can even lead to death. Hence, it is important to recognize the different varieties of jellyfish and identify the ones to avoid.
  • The Mauve Stinger is a jellyfish which is also known as Pelagia Noctiluca. The name is derived from the Greek words 'pelagia' which means 'of the sea', 'nocti' meaning 'night' and 'luca' meaning 'light'. The name describes the main characteristic of the jellyfish, namely that it glows in the dark of the night. This species inhabits the Mediterranean Sea and has been known to live in the waters near Hawaii and Northern Ireland as well. While its sting is considered moderate and generally not harmful to humans, this species lives in swarms as large as a billion jellyfish whose multiple stings may harm humans.
  • The Portuguese Man-of-War is not really a jellyfish. It is basically a colony of four individual polyps that have different functions and seem like different body parts of a single organism. Their sting is powerful and can be very painful and can some times cause death if treatment is delayed.
  • The Irukandji Jellyfish is also known as Carukia Barnesi or Malo Kingi, which inhabits the waters near Queensland in Australia. Although its sting can cause immediate pain, its symptoms may not surface for up to 20 or 30 minutes and therefore isn't often associated with the sting itself. This species can cause death if medical intervention is not available immediately.
  • The Box Jellyfish is a sub group containing a number of similar jellyfish and is not a single species. Though all species of box jellyfish are not dangerous to humans, there are some like the Chironex fleckeri, which is considered the most dangerous stinging jellyfish. It is primarily an inhabitant of the waters surrounding Australia and its venom can result in almost instant death in human beings.
  • Moon Jellyfish, or the Aurelia Aurita belongs to the species of the Aurelia genus. It is primarily found in the Pacific, Atlantic and the Arctic Oceans and is known to possess quite a powerful sting that can be very painful to humans.
  • The Purple Striped Jellyfish, also known as the Chrysaora Colorata, inhabits the waters off the coast of California. Although considered a moderate stinger, its sting can be very painful. However, the stings from this species are not considered fatal.
  • Sea Nettles are inhabitants of the waters off the coast of Australia and they tend to move around in large swarms. Individually, they are fairly harmless and their stings do not cause serious side effects in human beings. However, their multiple stings can reveal severe symptoms requiring urgent medical attention.
Learn more about Jellyfish Stings and Jellyfish Safety

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




Written by and Sudarsana Sinha.

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