Eastern Oyster Drill
NameEastern Oyster Drill
Scientific NameUrosalpinx cinerea
Common NameEastern Oyster Drill
FamilyMuricidae
GenusUrosalpinx
Speciescinerea
Geographic DistributionNative to the western Atlantic Ocean, ranging from Nova Scotia, Canada, south to Florida, USA. It has been introduced to other regions globally, including the Pacific coast of North America and parts of Europe, primarily through the transport of oysters.
Habitatintertidal
Shell Shapeconical
Average Size (mm)20
Identifying FeaturesKey identifying features include its spindle-shaped shell with prominent axial ribs and spiral cords, giving it a rough texture. The short, open siphonal canal and the often purplish interior of the aperture are also characteristic. Its predatory behavior of drilling into bivalve shells is a defining ecological trait.
Raritycommon
Author Citation(Say, 1822)
Description
The Eastern Oyster Drill (*Urosalpinx cinerea*) is a small to medium-sized predatory sea snail belonging to the family Muricidae. It is well-known for its ability to drill holes into the shells of bivalves, particularly oysters, to consume their soft tissues. Its shell is characterized by a spindle shape, prominent sculpture, and variable coloration.
