Note
Living barnacles eaten by sheepshead fishes results in the production of broken barnacle plate sediment. The yearly rate of production of broken barnacle plates varies seasonally, with the largest mean flux in summer and the least in winter. The mean grain size mode of broken barnacle plates is positively correlated with the flux of broken barnacle plates. Experiments with exclusion and inclusion cages support the postulation that increases in flux and size of broken barnacle plates are caused by the feeding activity of larger sheepshead.