This is Debi collecting Perna viridis from the intake pipes at TECO's Gannon Plant, October 13, 1999. Over 150 specimens were collected.  Sizes ranged from 6 to 63 mm (.24 to 2.48 inches). This is one of the mussel found inside the power plant last August 1999.  Small mussel ~20 mm such as these were gravid at the time they were collected.  This mussel was probably about 2 months old.