|Olividae, the olive snails, have elongated, smooth, shiny shells with a low spire and elongated aperture. Their columella (the central pillars around which the whorls form) usually have several folds. They have no siphonal canal but do have a well-developed siphonal notch. One genus, Oliva, found in Texas, has no operculum. Olives can extend their mantle and foot to cover the entire shell, thus maintaining the shell's shiny finish. They are common in shallow waters on sandy bottoms in which they burrow. Their diet consists of small invertebrates and carrion. There are 2 species found in Texas.