Spotted Stromb
NameSpotted Stromb
Scientific NameStrombus mutabilis
Common NameSpotted Stromb, Changeable Stromb, Variable Stromb
FamilyStrombidae
GenusStrombus
Speciesmutabilis
Geographic DistributionIndo-Pacific region, including East Africa, Red Sea, Indian Ocean, Australia, Japan, and various Pacific islands (e.g., Hawaii, Polynesia).
Habitatintertidal
Shell Shapeconical
Average Size (mm)20-50 mm (2-5 cm)
Identifying FeaturesVariable spotted or mottled color patterns, ovate-conical shape, thickened outer lip with a stromboid notch, short siphonal canal, and a relatively small size for a stromb. The internal aperture color can also be a distinguishing feature, often showing purplish or yellowish tints.
Raritycommon
Author CitationSwainson, 1821
Description
The Spotted Stromb, scientifically known as Strombus mutabilis, is a small to medium-sized sea snail belonging to the Strombidae family. It is highly variable in its shell coloration and pattern, often displaying a mottled or spotted appearance, which likely gives rise to its common name. The shell is typically solid, ovate-conical, with a moderately elevated spire and a large body whorl. A characteristic feature of Strombidae, the stromboid notch, is present on the outer lip, which is often thickened. The aperture can vary in color, sometimes exhibiting purplish or yellowish hues. These shells are commonly found in shallow tropical waters, grazing on algae and detritus.
