breakwater, groin, groyne, mole, bulwark, seawall, jetty
['bucket, pail', 'crayfish, crawfish, crawdad, crawdaddy', 'yawl', 'magnetic compass', 'grey whale, gray whale, devilfish, Eschrichtius gibbosus, Eschrichtius robustus', 'leatherback turtle, leatherback, leathery turtle, Dermochelys coriacea', 'flatworm, platyhelminth']