Pacific Littleneck Clam Shell

Scientific Name: Leukoma staminea

Category: shell

Pacific Littleneck Clam Shell

Brief Description

A small, rounded bivalve shell often found on rocky or gravelly beaches.

Characteristics

Oval to round shape with strong radiating ribs and less prominent concentric ridges, giving it a cross-hatched or latticed texture. Usually white, cream, or grey.

Habitat

Intertidal and shallow subtidal zones, particularly in gravel, coarse sand, or mud under rocks.

When to Find It

Found year-round on beaches as empty shells; live specimens are best observed during low tide.

Conservation Status

Generally common, though populations can be affected by over-harvesting or pollution.

Ecological Role

Filter feeders that help maintain water quality and serve as a primary food source for crabs, sea stars, snails, and shorebirds.

Easily Confused With

Manila Clams (Ruditapes philippinarum), which tend to be more elongated and often have more colorful patterns or purple staining inside.

Observation Tips

Look for them in tide pools or among cobble at low tide. When collecting shells, ensure they are empty and check local regulations.

Interesting Facts

Pacific Littleneck Clams can live for up to 10-15 years and are a traditionally important food source for Indigenous coastal communities.