That is interesting to know, Hey @berniesanders, this man here ^^
Anyways I have never been stung by a jelly in any of my times swimming in the ocean, though while on the West Coast Trail we (the group members that finished eating) sat at the crab shack one day (like the only day you can) while part of our group was still eating and watched a little jelly handing around. It was pretty cool, no idea what type. Closest I came to having indepth knowledge about them was from a bio20 project that I did on jellyfish
Where I'm studying marine science I get firsthand knowledge from my professors who conduct research over almost any marine organism you can think of as well as other parts of the marine environments.
What was your project over? Jellyfish in general? You can discord me so we don't have a comment chain going on here if you want.