Crepidula badisparsa is a species of sea snail, a marine gastropod mollusk in the family Calyptraeidae, the slipper snails or slipper limpets, cup-and-saucer snails, and Chinese hat snails.It is a small species with flecks of tan and dark brown on the shell. It lives attached to other small gastropods in seagrass beds. This species is unusual in that in produces lecithotrophic larvae which hatch as large pediveligers.