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, heart-shaped to sub-triangular fan
Species
Chione cancellata
Shell Type
Bivalve (two-shelled), whole shell, heart-shaped to sub-triangular fan
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
Cream to off-white base color adorned with distinct reddish-brown or dark brown radial rays and blotches, particularly prominent toward the posterior and anterior margins. The colors are natural and well-preserved.
Rarity
Common
Habitat
Found buried in shallow subtidal waters and intertidal zones, typically inhabiting sandy or muddy substrates in seagrass beds and protected bays. Marine species.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through Florida, the Gulf of Mexico, the Caribbean Sea, and down to Brazil.
Description
A solid, heavy, and robust bivalve shell with a distinct heart-like profile when viewed from the side. The exterior features a very prominent, coarse grid or cross-barred sculptural pattern formed by strong, elevated concentric lamellae intersecting with distinct radial ribs. The interior margin is finely crenulated.
Key Features
The deeply cancellate (grid-like) surface sculpture created by sharp, elevated concentric ridges crossing radial ribs, combined with a robust, somewhat triangular shape and crenulated inner margins.
Collector Value
Low to moderate commercial value, highly popular among beginner and intermediate beachcombers and shell collectors due to its attractive grid pattern and durability.
Condition Notes
Good to Fine condition. The shell is structurally intact with no major fractures, and the distinct pattern and concentric ridges show very little wear or sun-bleaching.
Interesting Facts
Venus clams are suspension feeders, using specialized siphons to draw in water and filter out microscopic plankton and organic particles. Their heavy, sculpted shells provide excellent defense against crushing predators like crabs and fish.
Ecological Role
Plays an important role in benthic marine food webs as both a filter feeder that helps clear coastal waters and as a food source for carnivorous gastropods, fish, and crabs. Not currently endangered or heavily regulated.
Similar Species
Chione intidupunclata (Smooth-edged Venus) and other Chione species, which can be distinguished by differences in the spacing of the concentric ridges and the extent of radial ornamentation.
Beach Finding Tips
Look along sandy and shelly beaches in the Caribbean and Florida, especially after storms or during low tide. Sift through shell piles along the high tide line where heavier bivalves tend to accumulate.