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Photo Credit: www. oceana.org
The geoduck (pronounced "gooey duck") is a large clam native to the west coast of North America. Unlike the giant clam, which is almost all shell, the geoduck has a small shell compared to the soft part of its body, which it cannot retract into the shell. The shell rarely grows larger than about 8 inches (20 cm), but the soft body can be over 3.3 feet (~1 m) long. Geoducks burrow deep into soft, muddy or sandy sediments, and this long "neck" is actually the siphon that the clam uses to bring clean seawater down to the deeply buried shell. They are the largest of all burrowing clams.
