Haustrum albomarginatum
NameHaustrum albomarginatum
Scientific NameHaustrum albomarginatum
Common NameWhite-margined rock whelk, Oyster borer
FamilyMuricidae
GenusHaustrum
Speciesalbomarginatum
Geographic DistributionEndemic to New Zealand, found around the North and South Islands.
Habitatintertidal
Shell Shapeconical
Average Size (mm)40-70
Identifying FeaturesRobust, turbinate shell with a moderately low spire; strong spiral sculpture often crossed by axial growth lines; dark coloration with contrasting lighter spiral bands; thickened outer lip; characteristic of the Muricidae family.
Raritycommon
Author Citation(Deshayes, 1839)
Description
A robust, predatory marine snail, commonly known as the white-margined rock whelk or oyster borer. Its shell is turbinate to broadly conical, characterized by strong spiral ridges and axial growth lines, giving it a somewhat textured appearance. The coloration is typically dark brown to purplish-black, often adorned with distinctive lighter, yellowish-white spiral bands, particularly prominent on the body whorl. It is an active predator in intertidal and shallow subtidal zones.
