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Dangerous jellyfish

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Dangerous jellyfish

Mensaje  Marina=)3ºE el Mar Mar 03, 2009 2:20 am

There are at least 4000 different species of jellyfish. Of course, not all are giants, and all itchy, and all have tentacles of meters and meters. Not even all of them are bad.
In part, the severity of the sting has to do with the surface of skin contacted with the tentacles and the amount of cnidocistos have been "fired."

It must be borne in mind that the venom of these invertebrates is the most powerful known. Among the most dangerous are on the Spanish coast, are, without doubt, Physalia physalis, the potency of its venom, and Pelagia Noctiluca, because it is also harmful because it is the most abundant.

Others, such as the Cotylorhiza tuberculata, the Aurelia aurita and Chrysaora hysoscella are also very common in Spain, but less dangerous for the length of his little tentacles.


This is technically a jellyfish siphonophores, known as the Portuguese caravel or Aguaviva and is one of the most dangerous organisms that swarm our shores. Consolation is that it is not far from the most abundant. It is difficult to find a Portuguese caravel.

Floats in water with a float full of gas and can measure up to 30 centimeters in diameter. Its filaments can reach 20 meters when fully extended.

Their sting, causing a burn on the skin, it can kill by exhaustion or cardiac arrest, causing an anaphylactic shock in the bather. It is much more dangerous for children or people with weak or less defenses, such as the elderly.


It is likely that this is the most jellyfish stings in Spain, because it is the most common and the most dangerous. Its eight tentacles can measure more than two meters and have a density of up to 100,000 stinging cells per centimeter.

Rosacea and is transparent, with yellow spots and phosphorescence. His stinging liquid causes intense pain, swelling and redness of the skin. We must try to prevent wound infections.

Often happens that someone will receive a download for contacting a jellyfish that is a couple of meters away and the victim are viewing. Transparency and the length of the filaments are to blame for the unpleasant surprise.


Are the most dangerous, their venom is more harmful than the cobra. They are killing people in Australia and there are more deaths than bite cubomedusas shark attacks.

In large areas of coral reefs there are signs prohibiting swimming in danger of death, by the presence of these jellyfish. Not form colonies, but individuals who are lonely, so they are more difficult to detect.

Have an umbel-shaped tube and almost square, and live in tropical waters. However, this does not mean that they can not reach the Mediterranean. In fact, have already crossed the Suez Canal and have created serious problems in Israel and parts of Greece.

Among the highlights cubomedusas a recently discovered, the irukandji, a small jellyfish that has already killed nearly 70 people.



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Última edición por Marina=)3ºE el Mar Mar 03, 2009 2:49 pm, editado 3 veces

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Re: Dangerous jellyfish

Mensaje  satanik el Mar Mar 03, 2009 2:29 pm

I am frightened, I don't like the jellyfish

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Re: Dangerous jellyfish

Mensaje  tania_3e el Mar Mar 03, 2009 2:38 pm

hi marina I have found incredibly impressive wikiprollect me your loved one kiss wapa Smile cat I love you

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