You got stung by a jellyfish. This sea critter has thousands of tiny barbed stingers all along its tentacles. Although a few kinds of jellyfish can cause life-threatening stings, mostly it just ...

They're tiny baby jellyfish, so small you can't even see them -- about the size of a grain of pepper. And just like their grownup counterparts, they sting. The trouble comes when these babies get ...

He is believed to be the first person to die from a sting from an Irukandji, a peanut-sized jellyfish whose venom heightens the heart rate and blood pressure. There is no known anti-venom.