. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . are detected during pollock fishing operations. They have also been an occasional target species of the Japanese longline fishery. Since Pacific ocean perch and sablefish are dis- tributed primarily over the continental slope, the largest catches occurred near the shelf edge (Figs. 60-7, 60-8). Historically, catches of Pacific ocean perch have been higher in the Aleutian Islands region than in the eastern Bering Sea, as in 1977 (Fig. 60-7). Sablefish are more abundant in the eastern Beri

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. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . are detected during pollock fishing operations. They have also been an occasional target species of the Japanese longline fishery. Since Pacific ocean perch and sablefish are dis- tributed primarily over the continental slope, the largest catches occurred near the shelf edge (Figs. 60-7, 60-8). Historically, catches of Pacific ocean perch have been higher in the Aleutian Islands region than in the eastern Bering Sea, as in 1977 (Fig. 60-7). Sablefish are more abundant in the eastern Bering Sea than in the Aleutians. A third species group taken mainly on the outer continental shelf and slope of the eastern Bering Sea is Greenland turbot and arrov^rtooth flounder. As adults, these large flounders mainly occupy conti- nental slope waters, whereas juveniles are generally found on the shelf. Major concentrations of adults

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