Errant

You lean in and attack his lips with your own, sucking and prying open so that your tongue can pierce into him further. He's confused at first and for a moment you think he may bite you with his shark-like teeth, but then he relaxed and his tongue meets yours eagerly. He's sloppy at first, but you manage to correct his poorer habit with relative ease.

That is, until your need for air becomes desperate. You break away from him and propel yourself upwards towards the light. You gasp wildly as you breach the surface. The creature isn't far behind you now, but you may have just enough time to make it back to shore, unless...