Impedansea

Impedansea is a genus of small, marine snails, marine gastropod mollusks in the family Columbellidae, the dove snails. The genus contains two species, Impedansea costata and Impedansea subangulata. These snails are characterized by their small, conical shells with a smooth surface and a distinct, spiral sculpture. The aperture is rounded and slightly oblique, with a thin, calloused peristome.

Impedansea species are found in the Indo-Pacific region, with Impedansea costata occurring in the Red Sea and the Gulf of Aden, and Impedansea subangulata found in the Philippines. They inhabit shallow waters, typically on rocky substrates or coral reefs, at depths ranging from 1 to 30 meters.

The biology of Impedansea species is not well-documented, but they are believed to be deposit feeders, scavenging for organic matter on the seafloor. Their small size and inconspicuous appearance make them difficult to study, and their taxonomy is still a subject of ongoing research.

Impedansea is named after the Italian naturalist Giovanni Antonio Scopoli, who first described the genus in 1777. The name Impedansea is derived from the Latin words "impedere," meaning "to hinder," and "ansa," meaning "handle" or "loop," in reference to the distinctive sculpture on the shell.