Carinate Rock Shell
NameCarinate Rock Shell
Scientific NameReishia carinifera
Common NameCarinate Rock Shell
FamilyMuricidae
GenusReishia
Speciescarinifera
Geographic DistributionIndo-Pacific region, including Southeast Asia (e.g., Philippines, Indonesia, Malaysia, Thailand) and parts of the Indian Ocean.
Habitatintertidal
Shell Shapefusiform
Average Size (mm)30-50
Identifying FeaturesStrong, nodulose axial ribs and spiral cords, often forming tubercles; an angular or carinate shoulder; a denticulate outer lip; a relatively short siphonal canal; and a robust, thick shell. The presence of characteristic vase-shaped egg capsules, as seen in the image, is also a strong indicator.
Raritycommon
Author Citation(Lamarck, 1822)
Description
A robust, medium-sized marine predatory snail, characterized by its strongly sculptured shell. The shell features prominent axial ribs and spiral cords, which often form tubercles, giving it a 'carinate' or keeled appearance, particularly on the shoulder. The aperture is ovate with a denticulate outer lip, and the siphonal canal is relatively short. The specimen in the image is shown alongside a string of its characteristic egg capsules, indicating it is actively reproducing or has recently laid eggs.
