ranellids

Ranellids are a family of marine gastropod molluscs commonly known as tritons or horn snails. They belong to the superfamily Tonnoidea and are found in all the world's oceans, from tropical to polar waters. These snails are characterized by their typically large, heavy shells, which are often elaborately sculptured with axial ribs and spiral cords. Many species have a distinctive, elongated aperture and a thick, operculate lip.

The family Ranellidae is diverse, with over 100 living species and many fossil forms. They are carnivorous predators, feeding on a variety of invertebrates such as echinoderms, other molluscs, and polychaete worms. Their feeding habits are often adapted to their specific environment, with some species being active hunters while others are more opportunistic scavengers. The shells of ranellids have been used by humans for various purposes throughout history, including as decorative items, tools, and even musical instruments. Some larger species, like the giant triton (Charonia tritonis), have particularly impressive shells and are highly sought after.