weapon enhancement: opposable, +1 bonus, allows creatures to wield weapons normally requiring hands with a few minor caveats. from masters of the wild.
as an opinion, if the weapon was sized and weighted for the creature in question, and it was considered proficient in it somehow (there is another weapon enhancement for that, if granting class levels is not desired) then something as intelligent as a squid, octopus, or kraken should be able to wield a weapon. it has enough musculature for it, unlike a jellyfish.