(Clupea harengus.) [AS. haering, from the root here, an army.] A well-known sea food-fish. Herrings are found on the shores of the North Sea, the North Atlantic, the Baltic, and the White Sea. They approach the coast every spring in order to spawn, and then the great herring-fishing season commences. They move about in immense schools - the main body often divided into columns of from five to six miles in length and from three to four in breadth - swimming near the top of the water, and followed by multitudes of larger fishes and by gulls, fish-hawks, and other sea-birds, which feed on them. Drift-nets are employed in catching herring. These are let out from boats, usually in the evening; and when the fish are taken to the shore they are cleaned, salted, and packed in barrels. The fish locally known as herring in the American rivers south of Maine is the ale-wife, of the same genus as the shad. It is very abundant and much esteemed. There is also a Pacific herring whose abundance resembles that of the Atlantic species, and whose fishing is of growing importance.