Atlantic Strawberry Cockle
Phylum: Mollusca, Class: Bivalvia, Order: Cardiida, Family: Cardiidae, Genus: Americardia, Species: Americardia media · Cardiidae (Cockle family) · Bivalve (clams/two-shelled); single valve specimen; square-ovate, inflated shape.
Species
Americardia media
Shell Type
Bivalve (clams/two-shelled); single valve specimen; square-ovate, inflated shape.
Family
Cardiidae (Cockle family)
Size
Approximately 1 inch (2.5 cm). This is a medium-sized specimen as the species typically ranges from 0.5 to 2 inches.
Color & Pattern
Vibrant orange to reddish-brown coloration on a cream base. Features distinct dark mottled spots or 'freckles' on the ribs. The interior is typically white with some external color showing through the margin.
Rarity
Common to Very Common. These are frequently found on beaches throughout the Caribbean and Florida after storms or high tides.
Habitat
Found in shallow water, generally from the intertidal zone to about 60 meters deep. Prefers sandy or muddy substrates near coral reefs or seagrass beds.
Geographic Range
Western Atlantic, ranging from North Carolina and Florida through the Caribbean to Brazil.
Description
A robust, thick-walled bivalve shell with a distinctive boxy or 'squarish' appearance when viewed from the side. It features strong, sharp radial ribs (around 30-36) with small scales or cross-ridges. The posterior end is noticeably flattened or truncated, giving it a unique geometric profile.
Key Features
Distinguished by its truncated (flat) posterior slope, the 'strawberry' speckled pattern on its ribs, and a nearly equilateral, inflated shape.
Collector Value
Minimal monetary value ($1-$5) due to its abundance, but highly desirable for amateur collectors because of its beautiful geometric shape and bright strawberry-like colors.
Condition Notes
Good condition. The ribs appear well-defined and the color is quite fresh, though the edges show minor beach wear. Collectibility grade: Fine.
Interesting Facts
The 'cockle' name comes from the heart-shaped profile formed when both valves are joined. Unlike many clams, cockles have a strong, L-shaped muscular foot that allows them to 'jump' across the seafloor to escape predators like starfish.
Ecological Role
Suspension feeders that filter plankton from the water. They serve as a vital food source for gastropods, sea stars, and various bottom-feeding fish. They are not currently protected or endangered.
Similar Species
Trachycardium egmontianum (Prickly Cockle), which is more elongated and has more prominent spines; or Americardia guppyi, which is smaller and more delicate.
Beach Finding Tips
Look along the high-tide line on sandy Caribbean or Florida beaches after a storm. They are often found partially buried or mixed in with shell 'hash' near rocky outcrops.