Origin: Shoaled; Shoaling.
1. A place where the water of a sea, lake, river, pond, etc, is shallow; a shallow. The depth of your pond should be six feet; and on the sides some shoals for the fish to lay their span. (Mortimer) Wolsey, that once trod the ways of glory, And sounded all the depths and shoals of honor. (Shak)
2. A sandbank or bar which makes the water shoal. The god himself with ready trident stands, And opes the deep, and spreads the moving sands, Then heaves them off the shoals. (Dryden) A large group of fish; a school of small glittering fish swam by.