Sea Wrack
SEA WRACK, the detached seaweeds thrown up, often in great quantities, by the sea and used for manure, also formerly for making kelp. It consists largely of species of Fucus brown seaweeds with flat branched ribbon-like fronds, characterized in F. serratus by a saw-toothed margin and in F. vesiculosus, another common species, by bearing air-bladders. Also of Zostera marina, so-called sea-grass, a marine flowering plant with bright green long narrow grass-like leaves.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)
