The bizarre-looking, highly phallic geoduck is a bivalve clam native to the coastal waters of the Pacific Northwest, especially Puget Sound in Washington state. The name (pronounced "gooey-duck") is derived from an American Indian phrase meaning "dig deep"--fitting, because these huge clams live deep in the mud flats of their coast. But you'll want to dig deep, because geoduck is a delicacy, with a mild brininess and crunchy texture that has in recent decades become very trendy, especially in Asia.
The geoduck is one of the largest clam species in the world, reaching up to four feet in length (its siphon makes up the majority of this length), and it's also one of the oldest, routinely living for more than a hundred years. The oldest known geoduck to be scientifically dated was a whopping 168 years old.