The species lives attached to hard substrate: shells, stones, rock… Sometimes it forms large colonies in areas sheltered from surf, such as these reef-like systems noticed along the levanrine coast, where shallow platforms of Dendropoma cristatum surround slightly deeper basins colonized by Vermetus triquetrus (Safriel, 1975). – Above: pair collected on stone at 5m deep, Saronikós kólpos, E. Attiki, Greece. 31mm.

«Shell solitary or aggregated, of triangular section, almost depressed, twisted in an orbicular or a turbinated coiling, with transverse flexuose wrinkles. » – op. cit. p.6.