Laevipilina

Laevipilina is a genus of monoplacophoran molluscs. They are very small, mostly deepwater animals which have a superficially limpet-like shell. All species are at approximately 2–3 mm in length, have 5 pairs of gills (except for "Laevipilina hyalina", which has 6 pairs), and have 4-5 intestinal coils.