Navtiluses or Nautiluses: How To spell?

The word Navtiluses is misspelled against Nautiluses, which is plural of "Nautilus"

Word contains consecutive vowels 'AU' in between alphabets n & tiluses is misspelled as 'AV'
Wrong Spelling:  n-av-tiluses 
Correct Spelling:  n-au-tiluses 
Check more misspelled words of Nautiluses to spell it correct.

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