Gibberula modica

Gibberula modica is a species of minute sea snail, a marine gastropod mollusk in the family Cystiscidae, (previously placed in the family Marginellidae).

Description
The shell size is 3 millimeters long, decorated with sandy yellows, browns, and whites. The opening is white, and the sides of the opening are ridged.

Distribution
This marine species is endemic to São Tomé and Príncipe.