Crassostrea gigas is native to the waters of the northwestern Pacific from the Sakhalin Islands to Pakistan. It has, however, been introduced in many areas of the world. On the west coast of North America, the species can be found from Prince William Sound, Alaska, to Newport Bay, California (Coan et al., 2000: 217). Several attempts have been made to introduce the species to Dutch and German waters, along with other coastal waters of Northern Europe. The species has also been observed in South Africa, Australia, New Zealand, France, and the British Isles (Nehring, 2006: 3,4).
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