Sunray Venus Clam
Phylum: Mollusca, Class: Bivalvia, Order: Venerida, Family: Veneridae, Genus: Macrocallista, Species: Macrocallista maculata · Veneridae (Venus Clam family) · Bivalve (two-shelled clam), whole shell, fan/oval shape
Species
Macrocallista maculata
Shell Type
Bivalve (two-shelled clam), whole shell, fan/oval shape
Family
Veneridae (Venus Clam family)
Size
Approximately 1 to 1.5 inches in the displayed specimen, which is smaller than average; adults typically range from 2 to 4 inches.
Color & Pattern
Tan to light brown base color with faint brownish purple rays or zigzag markings, though this specimen is somewhat weathered and sun-bleached showing a lighter umbo area.
Rarity
Common
Habitat
Shallow subtidal and intertidal zones, typically buried in clean marine sands or sandy mud in tropical and subtropical waters.
Geographic Range
Western Atlantic Ocean, including North Carolina, Florida, the Gulf of Mexico, the Caribbean Sea, and down to Brazil.
Description
A sturdy, smooth, oval-to-elongate bivalve shell with fine growth lines and a distinctive glossy finish when fresh. The umbo is prominent, and the exterior displays attractive brownish ray patterns on a lighter background.
Key Features
Smooth, glossy porcelain-like exterior (when fresh), oval-elongate profile, and distinct radiating color bands or blotches.
Collector Value
Inexpensive and common; widely collected by beachcombers and sold in shell shops as an attractive representative of the Veneridae family.
Condition Notes
Good condition display shell, whole valve, showing some natural weathering and minor surface wear typical of beach-collected specimens.
Interesting Facts
Venus clams are named after Venus, the Roman goddess of love, reflecting the classical association of seashells with beauty and the sea.
Ecological Role
Benthic filter feeder that helps clean coastal waters by consuming microscopic plankton. Serves as prey for various marine predators including carnivorous snails, crabs, and fish.
Similar Species
Sunray Venus (Macrocallista nimbosa), which is typically larger and more elongated with distinct pinkish-purple rays.
Beach Finding Tips
Look along sandy ocean beaches after storms or at low tide, particularly in Florida and Caribbean destinations where whole valves frequently wash ashore.