Noutilus or Nautilus: How To spell?

The word Noutilus is misspelled against Nautilus, a noun meaning "A variety of diving bell, the lateral as well as vertical motions of which are controlled, by the occupants."

Word contains consecutive vowels 'AU' in between alphabets n & tilus is misspelled as 'OU'
Wrong Spelling: n-ou-tilus
Correct Spelling: n-au-tilus
Check more misspelled words of Nautilus to spell it correct.