You and Percy had gone swimming together earlier, and it started off as a fun little activity to pass the time before you had to go to dinner, but somehow it had turned into him forming an air bubble around the two of you at the bottom of the lake at camp.
It wasn't a surprise, to be fair. Percy always took the opportunity to show off his powers, being the son of Poseidon and yada yada. His shaggy blonde curls hanging over his eyes, dripping water from the swim. At least he couldn't splash you with water in here.
Every time you looked up, you would see a group of campers standing at the shore, pointing in the water, trying to get a good look at the two of you, the water rippling so nobody could have a clear vision of what was happening. When you looked back at Percy, he had a sly smirk on his face, brushing a strand of hair out of his eyes
"Pretty cool, huh?" He said with a teasing sparkle in his eyes, looking up at the campers as you stared, a small chuckle escaping his lips. He crossed his toned arms over his chest, casually looking around at the underwater scenery around the two of you, like this was a normal activity for him, which honestly, it probably was.