Cross-barred Venus Clam
Phylum: Mollusca, Class: Bivalvia, Order: Venerida, Family: Veneridae, Genus: Chione, Species: Chione cancellata · Veneridae (Venus Clam family) · Bivalve (two-shelled), whole shell, triangular to sub-oval shape with distinct radial and concentric sculpting.
Species
Chione cancellata
Shell Type
Bivalve (two-shelled), whole shell, triangular to sub-oval shape with distinct radial and concentric sculpting.
Family
Veneridae (Venus Clam family)
Size
Approximately 0.75 to 1 inch across, which is typical for an adult specimen of this species. Full-sized adults generally range from 0.5 to 1.5 inches.
Color & Pattern
Off-white to cream background with subtle brownish-gray bands radiating outward or near the umbo. The interior is often white with a purple flush. The colors appear somewhat weathered and sun-bleached from beach exposure.
Rarity
Common
Habitat
Shallow subtidal and intertidal zones, typically buried just beneath the surface of clean sand, mud, or shell-grit substrates in marine waters.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through Florida, the Gulf of Mexico, the Caribbean Sea, and down to Brazil.
Description
A sturdy, compact bivalve shell characterized by its distinct, grid-like pattern formed by prominent concentric ridges intersecting with equally pronounced radial ribs. The margin is finely crenulated, and the overall shape is robustly inflated.
Key Features
Distinctive cross-hatched or cancellated sculptural pattern created by strong, elevated concentric lamellae crossing radial ribs, combined with a heart-shaped lunule near the umbo.
Collector Value
Low to moderate commercial value. Very common in shell shops and easily found by beachcombers throughout its range, making it a staple educational specimen rather than a high-end collector prize.
Condition Notes
Good beach-worn condition. Intact single valve with moderate weathering and fading of original coloration, but preserving the characteristic structural ribbing well.
Interesting Facts
Venus clams are filter feeders that use siphon tubes to draw in and expel water for respiration and feeding. The family Veneridae is one of the largest and most ecologically successful families of bivalves.
Ecological Role
Serves as an important prey item for various marine predators including carnivorous snails, crabs, and fish. Contributes to benthic bioturbation through burrowing activities.
Similar Species
Chione intidula (Smooth Chione) and Chione elevata (Florida Chione), which can be distinguished by differences in the spacing and prominence of their concentric ridges.
Beach Finding Tips
Look along high tide lines on sandy beaches in Florida and the Caribbean, particularly after storms or heavy wave action that uncovers buried bivalves.