Helmet Shell
NameHelmet Shell
Scientific NameCypraecassis rufa
Common NameHelmet Shell, Red Helmet Shell, Bullmouth Helmet
FamilyCassidae
GenusCypraecassis
Speciesrufa
Geographic DistributionIndo-Pacific region, including areas from East Africa to the Western Pacific, often found in tropical and subtropical waters.
Average Size (mm)150-300
Identifying FeaturesDistinguished by its very heavy and solid shell, low spire, and wide, flaring aperture. Key features include the prominent, strong teeth on both the columella and the thickened outer lip, and a well-developed parietal shield. The overall reddish-brown coloration with an orange aperture is also characteristic.
Raritycommon
Author Citation(Linnaeus, 1758)
Description
A large, heavy, and robust marine gastropod shell, characterized by its somewhat triangular-ovate shape, low spire, and wide aperture. The outer surface is typically sculptured with nodules or ridges, and the aperture features prominent teeth on both the columella and the thickened outer lip. The shell's interior is often brightly colored.
