Sunray Venus Clam
Phylum: Mollusca, Class: Bivalvia, Order: Venerida, Family: Veneridae, Genus: Macrocallista, Species: Macrocallista maculata · Veneridae (Venus clam family) · Bivalve, whole shell, oval-elongate shape
Species
Macrocallista maculata
Shell Type
Bivalve, whole shell, oval-elongate shape
Family
Veneridae (Venus clam family)
Size
Approximately 4 to 5 inches in length, which is large and on the upper end of the average size range for this species (adults typically range 2 to 5 inches).
Color & Pattern
Glossy cream to pale tan base color featuring distinctive reddish-brown or purple radial rays and zigzag markings running from the umbo to the margin. The colors appear completely natural and well-preserved.
Rarity
Common to Uncommon depending on the specific beach location; whole specimens of this size in great condition are prized finds.
Habitat
Shallow subtidal marine waters down to moderate depths, typically burrowing in clean sandy or shelly sand bottoms.
Geographic Range
Western Atlantic Ocean, including North Carolina, Florida, the Gulf of Mexico, the Caribbean, and south to Brazil.
Description
An elegant, smooth, and glossy bivalve with an elongate-oval outline. The exterior is adorned with striking radial rays of brownish-purple against a light cream background, giving it a sunburst appearance. The margins are smooth, and the surface features fine growth lines.
Key Features
Elongate oval shape, glossy exterior finish, and characteristic reddish-brown radial rays or broken bands on a pale background.
Collector Value
Moderately high collectibility due to its striking aesthetic appeal and glossy finish. Specimens in good condition with bright rays are popular in displays, typically valued between $5 to $20 depending on exact size and perfection.
Condition Notes
The shell appears to be in Fine to Gem condition, fully intact with vibrant natural color patterns preserved and no major chips or structural damage visible.
Interesting Facts
Sunray Venus clams are active burrowers that use their strong muscular foot to dig rapidly into the sand when threatened.
Ecological Role
Functions as a benthic filter feeder, helping to clear suspended organic particles from the water column while serving as a prey item for carnivorous marine snails, rays, and bottom-feeding fish.
Similar Species
Macrocallista nimbosa (Sunray Venus), which tends to be larger and more elongated with pinkish-orange rays rather than purple-brown spots and zigzags.
Beach Finding Tips
Look for single valves or paired shells washed up on high-energy sandy beaches after storms or heavy wave action, particularly along the Gulf Coast of Florida.