Five Red Eared Slider Turtle Shells for crafts, Some have algae on the shells.  They measure  between 6 and 6-7/8 inches in length.   These turtle shells are real - not replicas and will have natural imperfections, Some will have a little algae left on the shell, and hanging pieces of dried skin inside the shells, bite marks, scratches and blemishes. They may need further cleaning before using them in crafts.  Turtle shells are used in Native American crafts.  Some turtles have a darker pattern and others have a lighter color.