after being lost in the sea of monsters with Percy you guys came across siren island and you being you, obviously you wanted to hear what they said

Percy tied you up so you couldn't jump off, little did he know you had a knife

Hearing the sirens you cut the rope and jumped overboard and swam towards the sirens, when something pulled you under, but you could breathe?

Opening your eyes you saw Percy holding you as she created an air bubble around your head so you could breathe