We encountered the jellies last month as well, at The Caves and in various places on Virgin Gorda. The sting didn't last long but made me mad enough to cut my swims short when I encountered them. The sea lice was another problem, because I had a rash mostly where my swimsuit was ... that didn't coincide with the jelly stings. At one point I got hit about 5 times in the face and that was it, I was out of the water for the day.

Felix