Answer
Ocean City Police, Beach Patrol, and fire/rescue handle most island emergencies; county and mutual-aid partners support larger incidents and mainland calls. Still dial 911 for any life-threatening issue—give your street number and cross streets clearly. High-rise condos confuse location pins; teach kids your tower name.
Sources: Town of Ocean City · Worcester County
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.