Wrack is the common name for several species of seaweed in the family Fucaceae. See: Fucus ceranoides L.; Fucus cottonii M.J.Wynne and Magne; Fucus distichus L.; Fucus evanescans C.Agardh; Fucus serratus L., known in English by the Common Name as: "Toothed Wrack"; Fucus vesiculosus L. known in English by the Common Name: "Bladder Wrack"; Fucus spiralis L. known in English by the Common Name: "Spiral Wrack"; Ascophyllum nodosum (L.) Le Jolis known in English by the Common Name: "Knotted Wrack" and Pelvetia canaliculata(L.)
Algae, plant and animal matter, and drift material (including solid wastes and other pollutants) that accumulate on beaches, usually at the high tide mark.