Jose “Benny” Caballero and Elissa Alvarez were charged with lewd and lascivious behavior, FOX13 reported. The alleged crime took place over a long period of time and in front of dozens of people, police said.

“I’ve lived here since 1978 and I go to the beaches and I’ve never seen anything like this,” the grandmother said. “(Afterwards), they laid on the beach and passed out for hours. We thought they were dead, but when they woke up, they cuddled for a while, then started into the same thing they did before.”

Witnesses said after the first 25 minutes, the couple took a quick dip in the water, then returned to their beach towel to engage in more sex, witnesses said.

That’s when a parent reportedly called police.