Nerita planospira is a species of sea snail, a marine gastropod mollusk in the family Neritidae.

[1] The shell is cream and mottled black in color with an inner surface of the flat-spired nerite smooth and white.

It has a toothed shelf protecting the entrance.

The outer surface is thick and roughly ridged, and tightly coiled.

[2] This marine species occurs off Papua New Guinea