The Geoduck (“gooey duck”), Panopea generosa, is a species of very large saltwater clam, a marine bivalve mollusk in the family Hiatellidae.
The shell of this clam is large, about 15 centimeters (5.9 in) to over 20 centimeters (7.9 in) in length, but the very long siphons make the clam itself very much longer than this: the “neck” or siphons alone can be 1 meter (3.3 ft) in length.
Etymology:
The unusual name of the clam is derived from a Lushootseed (Nisqually) word gʷídəq meaning “dig deep”, and its phonemically counterintuitive spelling is likely the result of poor transcription rather than anything having to do with ducks. Alternate spellings include gweduc, gweduck, goeduck, and goiduck. It is sometimes known as the mud duck, king clam, or when translated literally from the Chinese characters 象拔蚌 (Pinyin: xiàngbábàng, Yale: jeuhngbahtpóhng), the elephant-trunk clam.
Between 1983 and 2010, the scientific name of this clam was confused with an extinct clam, Panopea abrupta (Conrad, 1849), in the scientific literature.
Biology:
Native to the northwest coast of the United States and Canada (primarily Washington and British Columbia), the Geoduck is the largest burrowing clam in the world, weighing in at an average of one to three pounds (0.5–1.5 kg) at maturity, but specimens weighing over 15 pounds (7.5 kg) and as much as 2 meters (over 6.5 ft) in length are not unheard of.
A related species, Panopea zelandica, is found in New Zealand and has been harvested commercially since 1989. The largest quantities have come from Golden Bay in the South Island where 100 tons were harvested in one year.
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