breakwater, groin, groyne, mole, bulwark, seawall, jetty
['maze, labyrinth', 'tiger shark, Galeocerdo cuvieri', 'sundial', 'great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias', 'liner, ocean liner', 'whiptail, whiptail lizard', 'coil, spiral, volute, whorl, helix']