Rissoina bertholleti

Rissoina bertholleti is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.

Description
The shell is elongated and thick. It has seven to eight convex whorls. There is a thick cord running over the abapical end of the body whorl. The color is a whitish with a blurry brown suprasutural band, fading out on the body whorl. The height of the shell is between 4 mm and 7 mm.

Distribution
This marine species occurs worldwide: in the Eastern Mediterranean Sea, the Red Sea and the Indian Ocean off Madagascar