Supplanaxis nucleus

Supplanaxis nucleus, common name the black Atlantic planaxis, is a species of small sea snail, a marine gastropod mollusk in the family Planaxidae.

Distribution
This species occurs in the Caribbean Sea, the Gulf of Mexico and off the Lesser Antilles.

Description
The maximum recorded shell length is 17 mm.

Habitat
Minimum recorded depth is 0 m. Maximum recorded depth is 3 m.