Sherri Walker Marshall, 48, was last seen at 10:40 a.m. Thursday as she was walking along the beach near Andy Rosse Lane.
She was looking for sand dollars, the Lee County Sheriff's Office said. She was reported missing by her husband.
She is described as 5-feet, 8-inches tall weighing approximately 130 pounds. She has short brown hair and brown eyes. She was last seen wearing a blue short-sleeved shirt with "YOLO" written across the front in white letters, the sheriff's office said.
