Pacific Northwest Bay Clams — Species & Where to Dig

Razor clams get the headlines, but the bays of Oregon and Washington hold a whole other world of clamming — and it’s open far more of the year. Bay clamming means walking the exposed mud and sand flats of a protected estuary at low tide and digging the species that live there. It’s calmer than surf digging, friendlier for kids, and you come home with a more varied bucket.

New to telling them apart? Start with the clam identification guide.

The bay clam species

• Gaper clam (horse/empire clam) — the big prize. Up to 10 inches, buried 1–3 feet deep, with a huge siphon that makes excellent steaks and chowder.
• Cockle — round and ribbed, sitting at or near the surface. The easiest clam to dig; great for beginners.
• Butter clam — heavy and chunky, 6–14 inches down in sand and gravel. Prized for chowder. (Holds PSP toxin longer than most — mind closures.)
• Littleneck (native and Manila) — the classic small “steamer,” near the surface, sweet and tender.
• Softshell clam — fragile white shell in soft mud, the East-Coast-style fried/steamer clam.
• Purple varnish clam — invasive, in dense shallow beds; Oregon allows a generous limit because of it.

Full identification details for each are in the clam ID guide.

Where to dig — Oregon

Oregon’s estuaries are the heart of West Coast bay clamming. The species mix depends on each bay’s tides, salinity, and bottom:

• Netarts Bay — often called Oregon’s premier bay-clam bay; the full range of species and excellent tidal exchange.
• Tillamook Bay — the most diverse: gaper, butter, cockle, littleneck, softshell, and purple varnish.
• Yaquina Bay (Newport) — popular and accessible, the full range of species.
• Coos Bay — Oregon’s largest bay; gaper, butter, cockle, littleneck, softshell.
• Alsea, Siletz, Nehalem, Nestucca bays — strong for softshell and purple varnish.

Where to dig — Washington

Washington works differently. WDFW manages many public beaches with beach-by-beach open seasons, so a spot is only legal when both the WDFW season is open and the Department of Health status is open on the Shellfish Safety Map.

• Puget Sound beaches — Manila and native littleneck, butter, cockle.
• Hood Canal — productive for butter, littleneck, and horse (gaper) clams; spots like Potlatch State Park.
• Willapa Bay — estuarine clam and oyster country.

Always check the current WDFW shellfish-beaches page for the specific beach’s season before you go.

How bay clamming differs from razor clamming

Before you dig

Bay clams carry the same biotoxin risk as razor clams — domoic acid and PSP can close a bay, cooking doesn’t remove them, and signs aren’t always posted. Always check the safety status first (ODA 1-800-448-2474 in Oregon, WA DOH 1-800-562-5632 in Washington).

Next: how to dig bay clams, including the limits for each species.