Percy took a moment to marvel over how weird it looked having a mass of water just floating in the air like that. He had heard that could happen without gravity.

He quickly focused back on the task at hand. Saving these people outweighed blowing his secret. He dived in while Peter was busy with the lady, giving a little nudge with the water so she could be pulled out all the sooner. As for everyone else, even as fast as Percy could swim he didn't think he'd get them all before they ran out of air.

So he created air pockets for them to breathe until he could get there. Hopefully Peter had pulled the lady out okay, because Percy was about to bring him a bunch more people. They all stared at him, wide-eyed and confused by the little air bubbles. Percy gave them a thumb's up and reached for the closest one to start pulling them toward where he left Peter.