1820 J. W. Eastburn Proem in p. xii Uttering flame and thunder from its side, The ocean-monster, with broad wings outspread, Came, ploughing gallantly the virgin tide.
1847 C. Dickens (1848) xiii. 121 Some ocean-monster, looking on with a red eye at these mysteries of the deep.
1944 M. Rukeyser Drunken Girl in (1978) Not the dog, Nor the green-beaded frog, Nor the white ocean monster lying flat.