This shell was collected by BJ Stacey (@finatic) while he was on a 2-day trip away from his one-week Sanibel visit, staying in the same hotel as myself and my husband.

BJ brought back a group of shells from Bark Park Dog Beach in Boca Raton, and I examined them. I photographed the rarest ones and the most fragile ones so I could nail down the IDs when I was still examining the material in person.