Question: Four questions; One, why the hell would Angelica be dressed and acting like Jack, and how could she think she could pull him off? Second, wouldn't Angelica and Blackbeard find it suspicious that Jack keeps asking questions about the Fountain of Youth? He claims that he's been there, and yet they don't find it weird that he's asking about something he's supposedly seen? Third, how was Syrena gonna save Phillip when she drags him underwater? Is there an undersea hospital or something? Fourth, why did Jack leave Angelica on an island by herself? I never understood that.
Question: How does Syrena get into the Fountain of youth cavern? Jack goes through the ceiling of the cave after being helped up, and the rest of the crew follows the same way with the ground being solid underneath them. Since this should be the only entrance to the cavern and there does not appear to be any water connected to the location where they enter, how does she get in to give the chalices to Jack?