Finn and his dog Haole compete in the tandem competition. Photo by Chris Stone

Choppy ocean waters, warm weather and higher-than- average beach attendance kept lifeguards busy over the long Labor Day weekend.

Around 450,500 beachgoers celebrating the unofficial end of summer flocked to the shores in the city of San Diego over the three-day weekend, according to the San Diego Fire-Rescue Department. About 177,000 of those visits occurred on Monday.

San Diego city lifeguards conducted more than 675 rescues over the weekend amid rough rip currents and high surf. San Diego Fire-Rescue spokesman Lee Swanson said a strong swell and warm water combined with good weather and large crowds made this weekend very active for lifeguards.

In Oceanside, lifeguards also dealt with the thousands of people who headed to the North County city’s beaches for the annual Oceanside Labor Day Pier Swim. Authorities said 105 of the 351 rescues made over the weekend occurred because of strong lateral current pulling toward the pier during the annual end-of-summer swim.

Extra lifeguards were on hand and some kept watch atop personal watercraft and a rescue boat.