Original sentence: This is the largest Recent shelled gastropod
Edited sentence: The half-moon shaped nose-pin is made from the shell of Syrinx aruanus by indigenous peoples of Australia on the Pennefather River, Queensland.This article incorporates public domain text from reference.This imina is employed by men only, the women using a piece of grass.This is the largest recent shelled gastropod.Unless the shell is fresh, it is soaked for some two or three days in water; the operator, by means of a stone, then chips out the portion indicated (see image), and grinds it down with water, the "rib" finally constituting the nose-pin