(1) For instance, WWF Norway says it is concerned about the impact of the crab - which has no natural enemies in Arctic waters - on the capelin , a fish considered central to the Barents Sea food chain.(2) In Alaska's Bering Sea, capelin , herring and other coldwater fish have been in decline, while warmer water creatures like albacore and ocean sunfish have made their appearance.(3) Like the capelin , these fish aggregate close to shore, then a female and associated males ride a wave to very shallow water, where they spawn on a fine gravel beach.(4) Larger salmon eat a variety of fishes such as herring and alewives, smelts, capelin , small mackerel, sand lace, and small cod.(5) They carry one capelin , herring, or sand lance at a time to the chicks, making about 16 trips a day.
