The first day of the Fourth of July holiday weekend was a busy one for the city's beaches.
Lifeguards estimated that 155,000 beachgoers flocked to the shores on Saturday, according to San Diego Fire Rescue Department spokesman Lee Swanson.
That figure is only for beaches in the City of San Diego. It does not account for state beaches or beaches in other cities along the San Diego County coastline.
Lifeguards made 28 rescues throughout the day Saturday and responded to 72 medical aid calls, according to Swanson.
Crowds were expected to increase as the weekend wore on, according to lifeguards.