The thongs - sorry, throngs - of beachgoers are posing an increased threat to sea turtles and their eggs, according to the New York Times.
Turtle conservationists have tried to protect turtle nests by roping them off and posting signs, but vandals and turtle poachers are still a problem, and last year Miami Beach imposed a law as to how much light can be shown on the beach at night, as the baby turtles make it to water via moonlight.
During breeding season, you can find Ahern driving up and down the beach at dawn, looking for anyone who poses a threat to the turtles and looking for new eggs, some of which are taken to a hatchery.
Cliff Buchanan, a photographer who calls himself the Turtle Dude of Miami Beach, patrols one strand of the beach. During breeding season he camps out next to nests with eggs ready to hatch.
He says it's the nightclubbers who stumble, drunk, to the beach after a night of partying who have no respect for nature.
"I've seen drunks pulling up stakes roping off nests and kick the sand inside," Buchanan said. "I don't carry a gun, but sometimes I wish I did."