Chinese Mystery Snail
The shell of the Chinese mystery snail is large, spherical and smooth. The outer shell is light to dark olive green. The inner shell is white to pale blue. The operculum (“trapdoor”) is concentrically marked, with uniform color throughout, and no banding. The shell can have 6 to 8 whorls. The whorls are strongly rounded, and each suture where the whorls join is very indented. The outer lip is blackish and either round or oval.