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 valve, fan/triangular shape
Species
Chione cancellata
Shell Type
Bivalve (two-shelled), whole valve, fan/triangular shape
Family
Veneridae (Venus Clam family)
Size
Approximately 1 inch in length, which is average for an adult specimen of this species. Adults typically range from 0.75 to 1.5 inches.
Color & Pattern
Off-white or cream base color featuring distinctive grayish-purple radial bands running from the umbo to the margin. The colors appear natural but slightly weathered from exposure.
Rarity
Common, frequently found by beachcombers along the southeastern United States and Gulf coasts.
Habitat
Found in shallow marine waters, primarily in intertidal and subtidal zones down to about 20 meters, burrowing in sandy, muddy, or seagrass substrates.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through the Caribbean, the Gulf of Mexico, and down to Brazil.
Description
A sturdy, compact bivalve shell with a triangular to rounded-oval outline. The exterior features a prominent, highly textured grid pattern formed by radiating ribs crossed by numerous raised, concentric lamellae, giving it a distinctive cancellate appearance.
Key Features
The distinct grid-like pattern formed by the intersection of strong radial ribs and prominent concentric ridges, combined with a thick shell structure and a purple-tinted interior margin.
Collector Value
Low to moderate commercial or monetary value, but a staple collection piece for amateur beachcombers due to its striking geometric sculpture.
Condition Notes
Good condition. It is a single intact valve showing some natural weathering, fading, and a few small predatory boring snail holes near the center, typical of beach-collected specimens. Collectibility grade is Good.
Interesting Facts
Venus clams are suspension feeders, filtering microscopic phytoplankton from the water column using specialized siphons. They play a vital role in benthic-pelagic coupling in coastal ecosystems.
Ecological Role
Serves as an important food source for marine carnivores including predatory snails, rays, and bottom-feeding fish. They help filter and clarify coastal waters.
Similar Species
Chione intapurpurea (Lady-in-waiting Venus), which is often larger with a deeper purple interior, and Anomalocardia brasiliana, which has different ribbing details.
Beach Finding Tips
Look along sandy or shelly beaches in Florida, the Gulf Coast, and the Caribbean, especially at low tide or after storm events that churn up offshore substrates.