sea slug, nudibranch
['platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'armadillo', 'ant, emmet, pismire', 'hognose snake, puff adder, sand viper', 'albatross, mollymawk', 'submarine, pigboat, sub, U-boat', 'sunscreen, sunblock, sun blocker']