Sea Nettles Bluff Point State Park Groton

Was snorkeling in Bluufpoint Statepark. Midwy bewwet the picnic area and Bushy Beach. I thought I had been stung by a umber of hornets at once but it wasa seal nettle jelly. I was stung badly on my arm and on my legs. They jelleies were everywhere. I immediately flushed with vinegar and it didn't work.