chambered nautilus, pearly nautilus, nautilus
['monarch, monarch butterfly, milkweed butterfly, Danaus plexippus', 'tiger shark, Galeocerdo cuvieri', 'cuirass', 'mud turtle', 'grey whale, gray whale, devilfish, Eschrichtius gibbosus, Eschrichtius robustus', 'quill, quill pen', 'quilt, comforter, comfort, puff']