Granulina torosaGranulina torosa is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Marginellidae.DescriptionThe length of the shell is approximately 2.2 mm. These small sea snails are white and have a small spire, the exterior of the shell is smooth and flat and its lip is thickened and denticulate.DistributionThis marine species was found in the Strait of Gibraltar.