Modulus modulus

Modulus modulus, commonly known as the buttonsnail, is a species of small sea snail, a marine gastropod mollusc in the family Modulidae.

Distribution
The distribution of this species includes both the east and west coast of Florida.

Description
The maximum recorded shell length is 16.5 mm. The overall shape of the shell is button-like, with a gray or brown streaked, ridge-sculptured body whorl and a low spire.

Habitat
The minimum recorded depth is 0 m. The maximum recorded depth is 105 m. Found in shell grit and coral sand, among sea grass beds -at 2 to 3 feet depth.