Naatilus or Nautilus: How To spell?

The word Naatilus 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 'AA'
Wrong Spelling: n-aa-tilus
Correct Spelling: n-au-tilus
Check more misspelled words of Nautilus to spell it correct.