After a brief meeting with Moaning Myrtle, who pointed him in the right direction, Harry swam onwards towards the centre of the lake, staying a little more above the weeds to avoid future encounters with grindylows and any other creatures lurking in the deeps. The further he went, the more he heard a haunting song begin to play. It was the song he’d heard in the egg, only it had been changed slightly to tell him that he was halfway through the time allotted. Harry scowled and propelled himself forward with more energy until he came upon a crude, underwater town made of rock and algae.