Thick-lipped Drill
NameThick-lipped Drill
Scientific NameOcenebra edwardsii
Common NameThick-lipped Drill
FamilyMuricidae
GenusOcenebra
Speciesedwardsii
Geographic DistributionNative to the Mediterranean Sea and the Atlantic coast of Europe, ranging from Portugal northwards to the British Isles.
Habitatintertidal
Shell Shapefusiform
Average Size (mm)20-40
Identifying FeaturesKey features include the fusiform shape, strong axial ribs and spiral cords forming nodules (especially on the shoulders), a distinctly thickened outer lip, and a short siphonal canal. The color pattern of cream with reddish-brown markings is also characteristic. Its predatory 'drilling' habit on bivalves is a biological identifier.
Raritycommon
Author Citation(Payraudeau, 1826)
Description
A small to medium-sized predatory sea snail shell, characterized by its fusiform shape, moderately high spire, and prominent body whorl. The shell surface exhibits strong axial ribs and spiral cords, which often intersect to form nodules, particularly on the shouldered whorls. The aperture is ovate, and the outer lip is noticeably thickened, a characteristic feature. A short siphonal canal is present. The shell's coloration is typically off-white or cream, adorned with reddish-brown or dark brown axial streaks and blotches, especially on the shoulders and within the aperture.
