Well jellyfish do not have a brain, eyes, or a heart. So they pretty much just float around and sting stuff in their path. They don't have any rational thought to think to move away from humans.
I am packing the sleelveless (rental) and full wetsuits. I'll wear one or the other. My sister seems to think they won't be in the portion where I'll be swimming. My friend was there just a couple of weeks back and said she was stung twice it was nothing really.
Stinging or not... just the SIGHT of them makes me CRINGE!
If I have to DNS or DNF though, I'll be OK with it.

