Yellow Clam or Subnoded Venus Clam
Phylum: Mollusca, Class: Bivalvia, Order: Venerida, Family: Veneridae, Genus: Chione, Species: Chione cancellata · Veneridae (Venus Clam family) · Bivalve (two-shelled), whole valve, rounded to triangular fan shape
Species
Chione cancellata (Cross barred Venus Clam)
Shell Type
Bivalve (two-shelled), whole valve, rounded to triangular fan shape
Family
Veneridae (Venus Clam family)
Size
Approximately 1 inch in length and width, which is average for this species. Adults typically range between 0.75 and 1.5 inches.
Color & Pattern
Pale yellowish-white base color with distinct concentric ridges and radial ribs creating a checkered or cancellate pattern. The coloration is natural and shows slight weathering at the margins.
Rarity
Common, frequently found washed ashore on beaches within its natural geographic range.
Habitat
Found in shallow marine waters, typically buried just beneath the surface in sandy or muddy substrates, often in seagrass beds and intertidal zones.
Geographic Range
Western Atlantic Ocean, ranging from North Carolina through Florida, the Gulf of Mexico, the Caribbean, and down to Brazil.
Description
A sturdy, compact bivalve shell featuring prominent, elevated concentric lamellae crossed by fine radial ribs, producing a distinct grid-like texture. The umbo is prominent and curved forward, with a strong internal hinge structure characteristic of the Venus clam family.
Key Features
Distinctive cancellate (grid-like) surface sculpture formed by intersecting concentric ridges and radial ribs, a relatively thick and heavy shell for its size, and a prominent heart-shaped lunule near the umbo.
Collector Value
Low to moderate commercial value. While very popular for beginner collections and shell crafts due to their attractive texture, they are too common to command high prices among advanced collectors.
Condition Notes
Good condition, showing minor natural weathering on the exterior surface and margins, but retaining its overall structural integrity and characteristic surface sculpture. Collectibility grade is Good.
Interesting Facts
Venus clams are filter feeders that use siphon tubes to draw in water and extract microscopic algae and organic particles. They play a significant role in benthic-pelagic coupling by filtering the water column.
Ecological Role
Serves as an important prey item for carnivorous gastropods, fish, and shorebirds, helping to transfer energy up the marine food web.
Similar Species
Chione intidula and other Chione species. They can be distinguished by subtle variations in the spacing and prominence of the concentric ridges and radial ribs.
Beach Finding Tips
Look along high tide lines on sandy or shell-rich beaches in Florida and the Caribbean, particularly after stormy weather or strong onshore winds.