Meretrix morphina
NameMeretrix morphina
Scientific NameMeretrix morphina
Common NameMorphina clam
FamilyVeneridae
GenusMeretrix
Speciesmorphina
Geographic DistributionIndo-Pacific region, including Southeast Asia (e.g., Philippines, Indonesia, Malaysia, Thailand) and parts of the Indian Ocean.
Habitatintertidal
Average Size (mm)Based on the provided ruler, the shells in the image measure approximately 60-65 mm in length. Adult specimens generally range from 50 to 70 mm.
Identifying FeaturesSmooth, glossy exterior (when unworn) with prominent, regular concentric growth lines. Ovate to subtrigonal shape, distinct umbo, and a relatively thick, solid shell. The pallial sinus is deep and U-shaped.
Dietfilter-feeder
Raritycommon
Author CitationLamarck, 1818
Description
The image displays two valves of the bivalve mollusc Meretrix morphina. These shells are robust, ovate to subtrigonal in shape, and equivalve. Their surface is relatively smooth but marked by distinct concentric growth lines. The coloration is predominantly light brown to creamy white, with irregular patches of darker reddish-brown or purplish-brown, particularly noticeable near the umbo and along some growth increments. The shells show some signs of wear and minor encrustations, typical of collected specimens.
