The only one you should ever actually use in English is “octopuses,” which is correctly used by Nature in their article and in the linked NIH proposal. It’s the right term for both everyday use and for academic and legal purposes. Octopus is a common English word and warrants the standard English plural.
Fun fact, the plural of octopus is actually octopuses, or my favourite, octopodes!
The only one you should ever actually use in English is “octopuses,” which is correctly used by Nature in their article and in the linked NIH proposal. It’s the right term for both everyday use and for academic and legal purposes. Octopus is a common English word and warrants the standard English plural.
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Octopuses is the English plural and most commonly used, but I personally use octopodes just cause I just like how it sounds lol.
Honestly octopuses just sounds awkward anyway