The Collaborative International Dictionary of English v.0.48:
Waterscape \Wa"ter*scape"\, n. [Cf. Landscape.] A sea view; -- distinguished from landscape. [Jocose] --Fairholt. [1913 Webster]WordNet (r) 3.0 (2006):
waterscape n 1: a painting of the sea (as distinguished from a landscape) [syn: seascape, waterscape]