Answer
Sea nettles are the headline summer stinger in warm Chesapeake and Coastal Bays water; ocean beaches see jellies too, especially after winds concentrate blooms. Moon jellies and comb jellies often sting less or not at all but still startle kids. Identification matters for first aid—ask lifeguards what they are seeing this week.
Sources: Maryland Coastal Bays Program · Ocean City Beach Patrol · Visit 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.
