[In that moment, Luca knows exactly how Alberto felt about the belly button thing. If they can't know they're revealing their secret until it's too late, if even their smell gives them away, how are they supposed to hide?]

Wait! What did I do wrong? I was trying so hard to hide it and...back home I didn't make it a week on land without being found out and I only didn't get harpooned because Massimo stopped Ercole from killing us and there are so many humans here and I keep making mistakes!