weer wat geleerd: "Octopus is a Greek word. Strictly speaking, the correct plural of octopus is octopodes.

Since the word has moved into English, octopuses is also acceptable.

The way most people pluralize it (one "-pus," many "-pi") is a Latin pluralization, which does violence to the language of the word."
met dank aan: Dr. Zen

Octopodes gaat ik dus vanaf nu gebruiken...