What is the most poisonous jellyfish in the world?

Question

Saw a great show on discovery channel that talked about a jellyfish the size of a fingernail that had lethal poison, anyone know the name of it?

Answer 1

The first guy was right, it is the Box Jellyfish. Here's what the Guinness Book Of Records has to say:

'The most venomous jellyfish is the beautiful but deadly Australian sea wasp, or box jellyfish, Chironex fleckeri, the most venomous cnidarian in the world. The sea wasp jellyfish has enough poison to kill 60 humans. Its cardiotoxic venom has caused the deaths of at least 70 people off the coast of Australia alone in the past century, with some victims dying within four minutes. One effective defence, however, is women's hosiery, outsize versions of which were once worn by Queensland lifesavers at surfing tournaments.'

Before you invest in pantyhose, also consider that the guy who nominated the Portuguese man o' war is right, they are dangerous. They are nowhere near as deadly as the sea wasp, but really severe reactions can include difficulty in breathing and cardiac arrest.

These creatures are not true jellyfish, though, so 'Boxy' wins on points!

Answer 2

Most Poisonous Jellyfish

Answer 3

Why the dreaded Australian Box Jellyfish of course. The portuguese man of war is poisonous and can cause deaths but not like the Box which is much worse. Known as the most poisonous jellyfish in the world, the Box jellyfish use thier tentacles as a defense mechanism to ward of other larger animals and capture prey. If stung here's what to do:
Immediately call the ambulance.
A bottle of vingear would stop the venom slowly, not completely, but who takes vinegar to the beach?! Call the ambulance becuase cardiac arrest can occur so it's imperative that you or someone is trained in CPR. American Red Cross has classes on CPR. The box jelly can kill an adult in 4 minutes.

Answer 4

This Site Might Help You.

RE:
What is the most poisonous jellyfish in the world?
Saw a great show on discovery channel that talked about a jellyfish the size of a fingernail that had lethal poison, anyone know the name of it?

Answer 5

Portuguese Man o' War-
The Portuguese Man-of-War (called the Bluebottle in Australia) is a floating colony of animals that lives in warm seas. This poisonous animal is called the Man-of-War because it looks a bit like a Portuguese battleship with a sail. The Man-of-War is eaten by many animals, including sea turtles. The sting from the tentacles is potentially dangerous to humans; these stings have been responsible for several deaths, but usually only cause intense pain. Detached tentacles and specimens washed up on shore can sting just as painfully as the full creature in the water. If stung, the best treatment is to cool the area with ice. However, the venom will travel up to the lymph glands and may cause, depending on the amount of venom, more intense pain. Cooling the pain infected area is again the best treatment and after 30 to 60 minutes the pain will decrease and vanish. Under no circumstances should alcohol or vinegar be applied to a sting area; these will cause the sting to become more painful. In extreme cases medical attention is necessary.

Answer 6

yeah the box jellyfish is the most poisonous in the world

Answer 7

The answer is the box jellyfish.

Answer 8

yaah...box jellyfish of australia is the most toxic jellyfish species present on earth...

Answer 9

The Portugese Man O War Is the most poisonous and has tentacles up to 100 feet long

Answer 10

The box jellyfish in Austrailia !!!!!!!!!!!?