Maura False Limpet Shell, Siphonaria maura: The Maura False Limpet Shell varies in color with white ribs and dark brown. The internal surface is dark with regular dark and white bars around the fringes. They reach a maximum size of 2.2 cm (0.9 inch) x 1.8 cm (0.7 inches) x 9 cm (0.35 inches).
In Mexican waters they are found throughout the Sea of Cortez and along the coast of the mainland south to Guatemala. These snails have been shown to contain a series of molecules that have antimicrobial properties.
The Maura False Limpet Shell is a small sized member of the Siphonariidae Family, which are the intertidal gastropods that are amphibious possessing both gills and lungs, known in Mexico as Falsas Lapas.
The shells are sturdy, cap shaped and strongly sculptured, most of which are dark in color. They are air-breathing residing primarily on rocks in protected areas.
They feed on algae which they scrape off the substrate with their radula (tongue).