Sienella

Sienella is a genus of small, marine gastropod mollusks belonging to the family Rissoidae. These snails are typically found in shallow, sandy or muddy bottoms of temperate and tropical waters worldwide. They are characterized by their small, elongated, and often spirally ornamented shells. The aperture of the shell is typically oval and is closed by an operculum, a horny or calcareous plate that seals the opening when the animal retracts.

The diet of Sienella species generally consists of algae and detritus found on the seabed. They are detritivores and herbivores, playing a role in the benthic ecosystem by consuming organic matter. Reproduction in Sienella, like many other marine gastropods, involves the release of eggs, which develop into planktonic larvae before settling to the seafloor to metamorphose into adult snails.

While not of significant commercial importance, Sienella species contribute to the biodiversity of marine environments. Their presence and abundance can sometimes be indicative of specific habitat conditions. Research on Sienella focuses on their taxonomy, distribution, and ecological roles within their respective marine habitats. The genus is relatively widespread, with numerous species described across various oceanic regions.