You decide to bathe.

The promise of dipping yourself in the pool is too much to resist. You strip your clothes off and wade in slowly. You feel the rocks along the bottom as you move deeper. The water is cool but pleasant as it rises over your body; it passes your thighs, then hips, then envelops your arms and shoulders, and before you know it you are up to your neck, treading water calmly.

The water is cool and relaxing, and you allow yourself to just float for a minute. The sound of the waterfall lulls your senses, and you close your eyes to take in the quiet solitude of this place.

You feel something bump against your leg, and you start. You feel it again on your other leg, and suddenly you get the feeling that something is moving in the water around you. Suddenly, a sharp pain on your calf. Something is definitely in the water. Fleeing the water sounds very good right now, if you could make it to the shore without any more sharp pricks. Kicking hard at the thing may also catch it by surprise.