anyone remember like around sept 2000, small brown jellyfish filling the sea? tons of them?
repeating myself...
Sweetjane, that is an annual phenomenon. They are the little thimble jelly fish. Sometimes you can swim among them and not get a sting and other times you can be stung all over. Not a bad sting, and I've never encountered anybody that got real sick when stung by thimbles. My kids used to collect them (with their hands) and place them in buckets. Then when they held the handle of the bucket they could actually feel the strength of the thimble's movements because the bucket would pulses.
It seems to me that the man o'wars are quite late this year, or early, depending on how you want to look at it. But either way they really pack a serious punch and if you are allergic to the sting you can get in trouble very quickly.
I don't know how you can tell when one is dead, but I do know that when they are floating around they sting, and when they are on the beach playing dead they sting too.
They have long tentacles, and sometimes these are chopped up by the boat props and then their are just the tendrils floating and stinging, with no tell tale purple balloon in sight.
It has been a long time since any of my family members have been stung but I know Doctor Otto took excellent care of them.