sea snake
['worm fence, snake fence, snake-rail fence, Virginia fence', 'syringe', 'spiny lobster, langouste, rock lobster, crawfish, crayfish, sea crawfish', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'nail', 'starfish, sea star', 'breakwater, groin, groyne, mole, bulwark, seawall, jetty']