More acidic water eats away at clam, oyster and mussel shells, said Mark Wiegardt, who raises shellfish larvae in
Tillamook, Oregon, and sells them to commercial harvesters. “The shells stop growing and the acidic water literally dissolves the calcium of the shells,” Wiegardt said. Wiegardt said he has seen an 80 percent cut in production in 2008 and a 40 to 50 percent drop this year....