i wonder what is that "HAT" doing under the sea floor......!

What if the hat is the true hat from gold roger? and the hat luffy wearing right now is not from gold roger
I mean look at latest chapther shanks is meeting with the old man which is impossible because he a pirate

The hat is too big for a person it is like a monument or a giant hat

I think its from joy boy? I forgot the name, i think his the one who write a letter for the princess mermaid for the curse hahaha