Cross-barred Venus Clam
Phylum Mollusca, Class Bivalvia, Order Venerida, Family Veneridae, Genus Chione, Species Chione cancellata · Veneridae (Venus Clam family) · Bivalve (two-shelled clam), whole shell, fan/rounded shape
Species
Chione cancellata
Shell Type
Bivalve (two-shelled clam), whole shell, fan/rounded shape
Family
Veneridae (Venus Clam family)
Size
Approximately 1 inch in length, which is average for this species. Adults typically range from 0.75 to 1.5 inches.
Color & Pattern
Uniform off-white to cream coloration with prominent raised concentric ridges crossed by fine radial ribs creating a grid pattern. The color appears somewhat sun-bleached and worn from wave action.
Rarity
Common, frequently found washed ashore on beaches within its geographic range.
Habitat
Shallow subtidal and intertidal zones, typically found buried in sandy substrates, muddy sand, or seagrass beds in marine environments.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through the Gulf of Mexico, the Caribbean, and south to Brazil.
Description
A sturdy, compact bivalve shell featuring a distinct, highly textured lattice or grid pattern formed by intersecting concentric ridges and radial ribs. The margin is finely crenulated, and the overall shape is rounded to subtriangular.
Key Features
Distinctive cancellate (grid-like) surface sculpture formed by strong, elevated concentric lamellae crossed by radial ribs, along with a robust, thick shell structure and crenulated inner margins.
Collector Value
Low to moderate value. While very popular among beginner beachcombers due to their striking texture, common specimens hold little monetary value outside of craft uses.
Condition Notes
Fair condition; single valve, sun-bleached white with slight wear on the prominent ridges, lacking original brownish-gray coloration, but structurally intact with no major breaks.
Interesting Facts
Venus clams are suspension feeders, using specialized siphons to filter microscopic phytoplankton from the water column. They play a vital role in marine benthic food webs.
Ecological Role
Serves as an important prey item for carnivorous gastropods, fish, and shorebirds. They help bioturbate and filter sandy bottom coastal waters.
Similar Species
Chione intidupunctuata or other Chione species, which can be distinguished by subtle variations in rib spacing and hinge structure.
Beach Finding Tips
Look along high tide lines on sandy beaches in the Caribbean or Gulf of Mexico, particularly after storms or heavy wave action.