Conch (pronounced 'konk') is a common name for certain large marine snails. They are gastropod mollusks, the most commercially important of which are in the family Strombidae. The specific species most commonly used for food is the queen conch, or pink-lipped conch, Strombus gigas, which can be found in warm waters of the Atlantic and the Caribbean from Florida to Brazil. Their shells have overlapping whorls with a bright colored pink lip, which can reach a length of 12 to 13 inches. The operculum, which is the covering of the shell opening, is a claw like structure which the conch uses to dig into the sand and push itself along the bottom. They are plant eaters and can live as long as 25 years.