I love that this comic about Octopi/Squids is posted by Flying Squid

i’d just like to interject for a moment, concerning the plural of octopus.

If you had looked it up, you would have discovered that ‘octopi’ is not the preferred spelling. It is not a spelling at all. The word does not exist, except in the mouths of those who are pretending to be educated but in fact are not. This is because the ‘us’ ending of ‘octopus’ is not a Latin nominative singular ending, which would form its plural by changing to the letter ‘i’. Instead, the syllable ‘pus’ in ‘octopus’ is the Greek word for ‘foot.’ And it forms its plural the Greek way. Therefore ‘octopoda’, not ‘octopi’. Never ‘octopi’.