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Sampling during the annual field sampling of chum salmon carcasses for scales,lengths, and weights. The Ocean Carrying Capacity program conducts the annualfield survey as part of a long term monitoring program on changes in the sizeage of chum salmon in North America.L to R Jerry Pella (Statistician),Jack Helle (Program Manager), and Chuck Guthrie (Research Biologist). (Image credit: Ellen Martinson)