breakwater, groin, groyne, mole, bulwark, seawall, jetty
['parallel bars, bars', 'leatherback turtle, leatherback, leathery turtle, Dermochelys coriacea', 'hard disc, hard disk, fixed disk', 'nematode, nematode worm, roundworm', 'tile roof', 'file, file cabinet, filing cabinet', 'flatworm, platyhelminth']