The geoduck (pronounced "gooey duck"), is a species of large saltwater clam, a marine bivalve mollusk. The shell of this clam is large, about 15 to over 20 cm in length (about 7 to 9 inches), but the long siphons make the clam itself much longer; the "neck" or siphons alone can be one meter in length. A real whopper.

Where to get Geoduck