>>281436557
thriller bark is kind of weird in general, because it was said the island drifted to its current position from the West Blue. So I guess it's got something like seastone coating and can cross the Calm Belt? Cause there's no way this thing made it over Reverse Mountain either.
I feel like the most logical explanation is that the Thriller Bark seen at Blackbeard's is a downscaled replica, and the original is still in the Florian Triangle.