Nerita versicolor
Nerita versicolor is a species of sea snail, a marine gastropod mollusk in the family Neritidae.
Description
The maximum recorded shell length is 20.5 mm.Shell small, consisting of 3 whorls and a smooth protoconch. The body whorl is large and flattened globose briefly, concave below the suture, sculptured with spiral cords 15–17. The aperture is wide. The columela is lunate, with a straight edge and contains four teeth. The color of the shell is irregular with white, black and red or pink. The operculum is calcareous, slightly concave papillose and gray to brown externally