Thank you! I'm still a wee bit fuzzy on this?

As the appendages of a Nautilus, do not, as far as I can see, have
sucker disks, and an octopus has sucker discs on all appendages (at
least all the species that I have seen), then isn't it suckers on arms
and not on tentacles. Or is the presence of suckers not the significant
difference?

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