Geoduck Clam

About the Geoduck Clam

The Geoduck Clam is unmistakable, not for its shell, which is relatively small for its overall size, but for its enormous, muscular siphon. This 'neck' can extend over three feet long, giving the clam a unique, somewhat prehistoric appearance as it pokes out of the seabed. Its large, oblong shell, typically 6-8 inches, encases a relatively small body compared to the massive siphon, which it cannot fully retract.

Source: FishBase & iNaturalist

Habitat

These unique bivalves burrow deep into soft sediments, such as sand or mud, in the subtidal zone. They can be found from shallow intertidal depths down to over 300 feet, often buried vertically with only the tip of their siphon exposed to the water column.

Distribution

Primarily found along the Pacific coast of North America, from Alaska down to Baja California, Mexico. Commercial and recreational harvesting is most active in the waters of British Columbia and Washington State.

Behaviour

Geoducks are sedentary filter feeders, using their long siphons to draw in plankton and detritus from the water. Once settled, they remain largely stationary for their entire lives, which can exceed 160 years. They are known for their incredibly deep burrows, making them challenging to harvest.

Edibility

★★★★★

Considered a highly prized delicacy, especially in East Asian cuisine. The meat is renowned for its sweet flavor, firm yet crunchy texture, often enjoyed raw as sashimi, stir-fried, or in various soups and dishes.

Lure suggestion

Angling for geoducks is not a traditional practice as they are sessile and deeply buried. Recreational harvesting typically involves digging during extreme low tides, often requiring a shovel, clam gun, or a PVC pipe (a 'clam pot') to stabilize the hole and prevent collapse while digging down to their significant depth. Look for characteristic 'show' – a small dimple or a brief squirt of water as they retract their siphon tip.