Geoduck is a common name for a large burrowing clam found along the coasts of the northwestern United States and nearby Canada. The geoduck is the largest American clam, often weighing as much as 12 pounds. Although its shell may be 8 inches across, it does not cover the entire body of the huge clam. The geoduck lives in a burrow 3 or 4 feet below the surface of the mud. It takes in food and discharges wastes through a long tubular organ called a siphon. Its meat is delicious, but the clam grows very slowly and is protected by law in many areas.
The geoduck,
Panopea generosa, is classified in the phylum Mollusca, class Pelecypoda.
