Sinum planulatum
NameSinum planulatum
Scientific NameSinum planulatum
Common NameEar Moon Snail, Flattened Moon Snail
FamilyNaticidae
GenusSinum
Speciesplanulatum
Geographic DistributionIndo-Pacific region, including areas such as the Philippines, Japan, and parts of Australia, in tropical to subtropical waters.
Habitatsubtidal
Shell Shapepatelliform
Average Size (mm)25-50
Identifying FeaturesKey features include its highly flattened, ear-like shape, the extremely low or sunken spire, the very wide and open aperture, and a smooth, glossy shell surface. The overall appearance is very distinct from typical coiled gastropod shells.
Raritycommon
Author CitationRécluz, 1843
Description
A flattened, ear-shaped marine gastropod shell, characterized by its very low, almost sunken spire and wide, open aperture. The shell surface is smooth and glossy, typically opaque white to creamy white, sometimes with subtle growth lines visible. It belongs to the moon snail family, Naticidae.
