Answer
Rinse with ocean saltwater—not fresh water from outdoor showers, which can worsen some nematocysts. Vinegar may help sea nettles per lifeguard guidance; rubbing alcohol and scraping with cards are older remedies—follow Beach Patrol instructions at guarded stands. Remove tentacle fragments with a towel edge, not bare fingers.
Sources: Ocean City Beach Patrol · Atlantic General Hospital · Town of Ocean City
Editorial visitor guidance for Ocean City, Maryland. Confirm current Town of Ocean City, Maryland DNR, NPS Assateague, and NWS rules when regulations or safety apply.
