Dangerous stingrays are swarming a California beach amid high ocean temperatures — and up to 15 people reported being attacked in one afternoon, according to officials.

Between 10 to 15 people were stung Tuesday afternoon along the shores of Coronado beach — which lifeguards attributed to the mid-60s water temperatures, news station KGTV reported.

“It was like fire – like my foot is on fire and it hurt so bad,” beachgoer Alexis Andujo told news station KXTV.

When waters heat up, there’s often an increase in stingray activity, but the high surge in attacks Tuesday afternoon was out of the ordinary, according to the news station.

“It was pretty unusual. This was a pretty good spike that we got,” Coronado Lifeguard Capt. Sean Carey told KXTV.

A stingray’s barb is covered with mucus and venom that can painful, experts said.

Lifeguards recommend the “stingray shuffle” which involves shuffling or dragging your feet to ward off the predators, according to KGTV.

“I didn’t know anything about the stingray shuffle. I definitely would’ve done the stingray shuffle,” another victim Darren Pries told KXTV.