Crenulated Auger

Oxymeris crenulata

Oxymeris crenulata is a marine gastropod known for its distinctive ovate, conical shell that can range in size from 48 mm to 154 mm. The shell typically displays a whitish, ashy, or reddish color, often adorned with two brown bands that may be interrupted. Its spire consists of seven or eight whorls, which are flattened and exhibit longitudinal folds intersected by fine striae. The upper edge of the whorls is characterized by rounded tubercles that separate the folds, while the aperture is ovate and features a distinctive transverse fold on the left lip. Young specimens tend to have deeper colors and more pronounced bands, while some may present a uniform appearance with closely spaced folds. This species inhabits various tropical marine environments, particularly in the Red Sea and across the Indian Ocean, including regions near Aldabra, Chagos, Madagascar, and Tanzania, as well as the Pacific Ocean off Mexico. Crenulated Augers are typically found at depths shallower than 40 meters, with most occurrences recorded at depths around 20 meters or less. They are non-broadcast spawners, meaning they do not release their eggs into the water column, and their life cycle does not include a trocophore stage. Divers may encounter Oxymeris crenulata at various dive sites, where they can observe the unique shell features and coloration. Conservation status for this species is not evaluated, but it is important for divers to be mindful of their interactions with marine life to ensure their continued presence in these ecosystems.