User blog comment:12th Supernova/Sabo uses Dragon Claw! It's super effective!/@comment-10860731-20140625090125/@comment-3203286-20140625182903

To me, that barrel looks like it's empty, but I will allow that we can't see in any detail. It could just as easily be Jinbe heading back from handing Caribou over. And if you're going to ask why keep the barrel, barrels have a lot of uses.