Cestonia

Cestonia is a genus of sea snails, marine gastropod mollusks in the family Marginellidae, the margin snails. These are small, often glossy, snails characterized by their involute shells where the outer lip enfolds the inner whorls, and their smooth surfaces.

Characteristics:

• Shell: The shell of Cestonia species is typically small, oval or pear-shaped, and highly polished. The spire is generally concealed or nearly concealed, with the last whorl dominating the shell structure. The aperture is narrow and elongated, and the outer lip is thickened and may be denticulate (toothed) inside.

• Coloration: Shell coloration varies between species and can range from plain white or cream to more elaborate patterns involving shades of brown, orange, or purple.

• Habitat: Cestonia snails are found in marine environments, often in tropical and subtropical waters. They typically inhabit sandy or muddy bottoms, or areas with seagrass beds.

• Diet: Members of the Marginellidae family, including Cestonia species, are carnivorous, feeding on small invertebrates.

Taxonomy:

The taxonomic classification of Cestonia has been subject to revisions over time. Further research and molecular studies may be needed to clarify the relationships within the genus and within the Marginellidae family as a whole.

Distribution:

Cestonia species are distributed in various locations throughout the world's oceans, particularly in warmer regions. Specific distribution patterns vary depending on the particular species.