Now is the time of rest and a lot of people go to some exotic land to the sea. You need all of you who are going somewhere in the sea to watch the jellyfish. The most dangerous jellyfish in the world is the Irukandji jellyfish. The big problem with it is that it is almost invisible when it bites, there is only little chance to recover from its poison. Here, the only way he can to recover the jellyfish when you down you see the various pictures, how can you save when you are bitten. The only salvation is to get magnesium in your body as quickly as possible. While you do not get magnesium in the body, to suffer great pain and great spasms. So, if you accidentally find yourself in such a situation, just ask for magnesium. Here below you can see pictures of the most dangerous jellyfish in the world.