Stella's gotten herself an air tank, and what better to do with one of those than hang out underwater for a while? You're down there with her, and she's been occasionally talking to you in an oddly clear voice. Seems she's gotten someone else's attention, though: A great white shark has spotted her, but there's no need to worry, he has no intention of hurting anyone. In fact, he's got a crush on Stella, and is staying back some distance while watching her and thinking about how he could approach her without scaring her, as he knows the reputation his kind has.
My part of a trade with gooseberry1839 Stella is their character.