Thai ko samet 05-09-2014

I dont know what type of jellyfish it was but it was quite a big one, i was "bitten" while snorkling and it was and it is quite painfull, even if at ko samet hospital i had antistaminic injection and pills.
Both arms and under the neck. I had pain (skin
burning), strong kidneys pain, imnsonia, leg cramps.
Now just skin burning.
After that going back to ban peh i saw a lot of jellyfish from the boat.
I think tourists sould be advised. I wasnt.
I know that in the sea can happen but what i saw from the boat was an invasion