Choke on water
From Create Your Own Story
Your head feels like it's going to burst. You can't hold your breath anymore. You doubt breathing in the water will make any difference to your current situation. Tenatively, you suck some water in...
To your surprise, you can breathe! Or at least it feels like it. Almost as if on its own, your body inhales again, then exhales, and then begins taking deep breaths. You can hardly believe it. This encourages your morale so much that you feel new energy thrumming through your body. Even though there is still a shark chasing you, you feel as if your life had just been saved. The shark clacks its teeth at you, but you are faster by a fraction.
It eventually leaves in chase of one thing or another. Now, you're safe, with a newfound skill. It seems that breathing in water is just another one of those "abnormal" things about you. But you were never able to breath in water before, all those time Dudley shoved your face into the toilet...
Maybe it only occured when you were in danger? You recall the time you had been running from Dudley and ended up on a roof. Perhaps being a freak wasn't such a bad thing after all, you think to yourself with a smile. If you had been born normal, just like the Dursleys and everyone else, you would've been twice dead by now.
Now, what will you do?