chiton, coat-of-mail shell, sea cradle, polyplacophore
['acorn', 'cliff, drop, drop-off', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'harvestman, daddy longlegs, Phalangium opilio', 'box turtle, box tortoise', 'dung beetle', 'barracouta, snoek']