Japanese Oyster Drill
NameJapanese Oyster Drill
Scientific NameOcinebrellus inornatus
Common NameJapanese Oyster Drill
FamilyMuricidae
GenusOcinebrellus
Speciesinornatus
Geographic DistributionNative to the Northwest Pacific (Japan, Korea, China). Introduced and invasive in the Northeast Pacific (e.g., British Columbia to California, USA) and parts of Europe (e.g., France, UK).
Habitatintertidal
Shell Shapefusiform
Average Size (mm)20-50
Identifying FeaturesKey features include its fusiform shape, prominent axial lamellae or frills on the shell surface (especially on the shoulder), a moderately high spire, and a short siphonal canal. The aperture is ovate with a thickened outer lip, which may be denticulate internally. The presence of a brown operculum is also characteristic.
Raritycommon
Author Citation(Récluz, 1851)
Description
The Japanese Oyster Drill (*Ocinebrellus inornatus*) is a predatory marine gastropod belonging to the Muricidae family. It is well-known for its ability to drill into the shells of bivalves, particularly oysters, to feed on their soft tissues. Native to the Northwest Pacific, it has become an invasive species in many parts of the world, causing significant ecological and economic impacts on aquaculture.
