Harppidae
Harppidae is a family of sea snails, marine gastropod molluscs. These snails are commonly known as Harp Shells. They are characterized by their beautifully patterned, glossy shells, which are often ovate or fusiform in shape. The shell surface typically features prominent spiral ribs and axial growth lines that create a distinctive harp-like appearance, hence their common name. Harp shells are generally medium to large in size, with some species reaching several inches in length. The aperture of the shell is usually wide and elongated, and the columella is smooth. The outer lip is typically thin. Harppidae are found in tropical and subtropical waters worldwide, inhabiting sandy or rubbly bottoms of the continental shelf and upper bathyal zones. They are carnivorous predators, feeding on small invertebrates such as polychaete worms and bivalves. Members of this family are active hunters, often burrowing into the sediment to ambush their prey. Notable genera within Harppidae include Harpa and Austroharpa. Their attractive shells have made them popular among shell collectors.