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Chum salmon catches in Asia (bars) and number of gill nets used in the high seas area (line) from 1952 to 2003. The solid bar indicates the catch in the high seas area east of 170°E. The open bar indicates catches along the Asian coasts, in rivers, and in offshore areas west of 170°E. The number of gill nets used during 1952 and 1953 was not available. One tan (panel) of gill net is ca. 50 m in length and ca. 7 m in height.
