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Of these, mussel farming is the best established.
en.wikipedia.org This mussel reaches about 10 centimeters long by 5 wide and 3 high.
en.wikipedia.org Sediment accumulation and loss of water quality are also major threats to the population of the mussel.
en.wikipedia.org To make ends meet, and alleviate writing amazingly dull papers on fishery matters, he moonlighted as a commercial diver for a mussel farm.
en.wikipedia.org They are usually thin-walled bottles and bowls, tempered with finely ground mussel shell, and polished to a glossy black surface.
en.wikipedia.org