Geoduck   Species Overview

Geoduck

Panopea generosa

As the world’s largest burrowing clam, geoduck grow rapidly with an average size of 2.5 pounds, and attain their maximum size in about 15 years, although they can live as long as one hundred years or more. Abundant in the inland waters of Puget Sound, British Columbia and Alaska, geoduck clams are found buried two to three feet deep in mud, sand or gravel in subtidal areas. The siphon and mantle are so large they cannot be drawn into the gaping, oblong shell. Geoduck spawn in the wild and hatchery seed is used for aquaculture.

geoduck