The Straw Hats beat the crap out of the Fishmen pirates. There is a blood transfusion and much more.

Finally Off Fishman Island: 570-574

You ever want to start One Piece but it just seems too damn big? Are you just starting One Piece and have noone to talk to? (You definitely can't search the internet it's full of spoilers) Well the We Get Dubbed guys got you. One of us will be watching One Piece for the first time the other will help guide him and you through.