Musashi waited for everyone to get back onto the boat with the exception of Lee who just sorta ran off or well in this case flew off, before saying to the rest of the group.

"Guys I think I know what the Devil Fruit the guy is using is."

Musashi went on to explain what the devil fruit was capable of and what had just transpired when she decided to take off two of the pirate's mask. To be honest she should have figured this out since they all looked and sounded similar and couldn't freaking swim. Which is made worse by the fact that she read the damn encyclopedia for devil fruits. 

"So yeah it's called the..."