Little Littleneck Clam (also known as Pacific Littleneck, Native Littleneck, or Manila Clam)
Phylum: Mollusca, Class: Bivalvia, Order: Venerida, Family: Veneridae, Genus: Leukoma, Species: Leukoma staminea · Veneridae (Venus Clam family) · Bivalve (two-shelled clam), whole shell, oval to rounded-triangular shape
Species
Leukoma staminea (or potentially Ruditapes philippinarum)
Shell Type
Bivalve (two-shelled clam), whole shell, oval to rounded-triangular shape
Family
Veneridae (Venus Clam family)
Size
Approximately 0.75 inches (1.9 cm) in length. This is a juvenile or small adult; typical adults reach 1.5 to 2.5 inches.
Color & Pattern
Mottled brown and cream exterior with subtle concentric growth lines and faint radial striations. The color appears natural and slightly weathered, with darker brownish patches near the umbo.
Rarity
Very Common
Habitat
Shallow intertidal and subtidal zones, typically burrowed shallowly in sand, gravel, mud, or mixed substrates in marine coastal environments.
Geographic Range
Pacific coast of North America from the Aleutian Islands, Alaska, down to Baja California, Mexico.
Description
A small, sturdy bivalve shell with a rounded, oval outline. The exterior features a distinct grid-like texture formed by prominent concentric growth lines intersecting with fine radial ribs. The umbo is slightly prominent and positioned near the anterior end.
Key Features
Rounded oval shape with both prominent concentric ridges and fine radial striations, creating a checkered or pebbled exterior texture, distinguishing it from smooth clams.
Collector Value
Low commercial value as an individual specimen due to abundance, but highly prized by beachcombers and culinary foragers alike. Typically found in shell collections as a representative intertidal bivalve.
Condition Notes
Good condition whole shell. Intact margins, natural coloration preserved without excessive bleaching, moderate wear consistent with beach or intertidal recovery. Grade: Good.
Interesting Facts
Venus clams are among the most ecologically and commercially important bivalves. They are heavily harvested for food, and indigenous peoples along the Pacific coast used their shells for tools and decorative purposes.
Ecological Role
Serves as an important filter feeder helping to clear coastal waters of phytoplankton and particulate matter. Forms a vital food source for sea otters, shorebirds, crabs, and fish.
Similar Species
Manila Clam (Ruditapes philippinarum), which has a more elongated shell shape and more pronounced, squarish posterior end compared to the rounder native littleneck.
Beach Finding Tips
Look along Pacific Northwest gravel or sandy beaches at low tide, particularly near estuaries or protected bays where broken shells and whole valves wash ashore.