Myrtle Beach Beach Patrol says it was a stingray, not a shark, that bit a 16-year-old from Virginia Tuesday in the Atlantic Ocean.
He was standing in waist-deep water when he was bitten on his foot.
Beach Patrol says a shark would have left a different wound than what the teen suffered.
It says when a stingray is stepped on, it will attack with a barb in its tail, leaving a single puncture wound in a person's foot.
To avoid that, Beach Patrol says swimmers should do the "Stingray Shuffle." That's shuffling your feet instead of picking them up as you walk through the surf.