Sunray Venus Clam
Phylum: Mollusca, Class: Bivalvia, Order: Venerida, Family: Veneridae, Genus: Macrocallista, Species: Macrocallista maculata · Veneridae (Venus Clam family) · Bivalve, whole single valve, oval-elongate shape
Species
Macrocallista maculata
Shell Type
Bivalve, whole single valve, oval-elongate shape
Family
Veneridae (Venus Clam family)
Size
Approximately 1 to 1.5 inches in length, which is slightly smaller than average; mature specimens typically range from 2 to 3.5 inches.
Color & Pattern
Glossy exterior featuring a warm cream or light tan base overlaid with distinctive brownish-orange or reddish-purple radial rays diverging from the umbo. The colors are natural and vibrant with a polished appearance.
Rarity
Common
Habitat
Found in shallow marine waters, typically buried just beneath the surface of clean sandy substrates in intertidal to subtidal zones.
Geographic Range
Western Atlantic Ocean, including North Carolina, Florida, the Gulf of Mexico, the Caribbean Sea, and down to northern South America.
Description
An elegantly smooth, oval-shaped bivalve with a porcelain-like luster. The shell features subtle growth lines and striking, sunburst-like radial color bands that stretch from the beak (umbo) to the outer margin. The margins are smooth and the exterior has a naturally polished finish.
Key Features
Smooth, glossy exterior texture combined with distinct radial brownish or reddish ray patterns radiating from the umbo on a lighter cream background, paired with a classic oval bivalve silhouette.
Collector Value
Modest collector value. While very common and frequently found by beachcombers, specimens with exceptionally bright, unbroken ray patterns and high gloss are prized for decorative displays and starter collections.
Condition Notes
The visible valve appears to be in very good to fine condition with intact margin edges, strong natural color preservation, and no major structural fractures or boring marks.
Interesting Facts
Venus clams are named after Venus, the ancient Roman goddess of love and beauty, due to the attractive and often porcelain-like appearance of their shells.
Ecological Role
Functions as a benthic filter feeder, helping to clear suspended organic particles from the water column while serving as a prey item for carnivorous gastropods, rays, and bottom-feeding fish.
Similar Species
Sunray Venus can sometimes be confused with other venerid clams like the Sunray Venus relative Macrocallista nimbosa, which tends to be larger and more elongate with pinkish-brown rays.
Beach Finding Tips
Look along sandy ocean-facing beaches after storms or heavy wave action, particularly at low tide along the wrack line where light shells are washed ashore.