Reappearance of Norwegian spring spawning herring on spawning grounds south of 60°N

In spring 1989 herring spawned west of Karmøy (near Haugesund) on the Norwegian west coast. Prior to 1945 the coastal areas around Haugesund were among the most important spawning (and fishing) grounds of the Norwegian spring spawning herring, but since 1959 there has been no reports of spawning herring in that area. This paper gives an account of the recordings in 1989, and of the length and age distributions of the herring. Possible migration routes are also discussed