American Star Shell

Lithopoma americanum

Lithopoma americanum, known as the American Star Shell, is a marine gastropod found in the Caribbean Sea, Gulf of Mexico, and off the Lesser Antilles. This species has a maximum shell length of 40 mm and features a solid, elevated, trochiform shell that can be white or yellowish in color. Its shell consists of seven whorls, with the upper three being smooth and flattened or concave. The body whorl displays approximately thirty-six folds that end in nodules, while the base is nearly flat with radiate striations. The aperture is oblique, and the outer lip is usually crenulated, making it distinguishable from similar species. The American Star Shell inhabits benthic environments at depths ranging from 0 to 33 meters. It is commonly found in tropical waters, typically in areas that provide shelter and food. The species is known to be herbivorous, feeding on algae and organic matter. Its reproductive behavior includes a life cycle where embryos develop into planktonic larvae before maturing into adults. Diving encounters with the American Star Shell can be intriguing, as divers may observe these snails nestled among rocky substrates or coral reefs. Their unique shell shape and coloration make them a notable sight. Conservation status for this species is currently not evaluated, but divers should always be mindful of their impact on marine ecosystems.