She doesn't know (original)

(author's note: this chapter originally written by anon_ninja over at writing.com)

“Can I use my own goggles I brought from home?” asked the man as he pointed towards the bench where he kept his towel and, surely enough, a pair of goggles.

“Of course." Jenna said. "Lemme go get them for you while you all wait here” Jenna instructed as she stepped out of the shallow pool, giving the class a full-on view of her wet, naked body from head to toe. The pensioners, still silent, stared quietly at their nude instructor and watched her gingerly walk around the poolside trying not to slip while finding goggles for the rest of the class.

As soon as she finally found a stash of goggles, she climbed back into the shallow pool went on to help some of the old folks adjust the fit of their goggles. Since Jenna towered over them, she had to bend over slightly in order to be in proper position to help the kits fit into their goggles.

However, as she looked downwards, she noticed something peculiar in the water. Could it be some kind of weird reflection? Or possibly some strange debris? Upon further investigation, Jenna realizes….