While floating about a little distance offshore, tippytoe depth, a jellyfish deemed it necessary to lay a big sting near my arm pit. I hurried to shore swishing my arm/body around. I told my swim partner she was NOT to pee on me. I took a freshwater shower, then googled sting treatment. It seemed my freshwater shower was about the worst thing I could do as a first step. Then I realized it wasn’t my first Step. My first step was to wash the jellyfish cooties off with seawater as I came back to shore; which was recommended. So my second step of a shower wasn’t so bad. And I put some cortisone cream (that I always carry when traveling) on the rash/blistering. The redness was almost gone by morning. But many google sources recommended applying white vinegar. I saw small bottles of it in the store and wondered about adding a solution to my kayaking first aid supplies. Anyone out there carry specific first aid for jellyfish encounters?