Address: PO Box 148, Coupeville WA 98239 / (888) 743-2033
About Us / Penn Cove Shellfish History: Oldest and largest mussel farm in the United States. We farm Penn Cove mussels and Mediterranean mussels, and distribute Manila Clams, Kumamoto Oysters and many different kinds of Pacific Oysters. We have 2 farms: Penn Cove and Quilcene Bay. Our mussels take 14 mo. to reach maturity, and in doing so, we never feed or fertilize them. Our natural environment provides for their growth, in a sustainable, and green way.