Tectonatica impervia is a species of predatory sea snail, a marine gastropod mollusc in the family Naticidae, the moon snails.

[1] The maximum recorded shell length is 18.1 mm.

[2] This marine species occurs off Chile.

Minimum recorded depth is 5 m.[2] Maximum recorded depth is 460 m.[2]

This Naticidae-related article is a stub.