Imagine a time when you immersed yourself in a slowly moving river. How quickly did you proceed? Did you run with abandon into the water and then dive in as soon as possible? Were you the cautious one, dipping in toes, then feet, then ankles, then standing there for a while getting used to the temperature?
Was there a boat ride that intrigued you? Perhaps someone had a canoe and the two of you paddled out into a sparkling lake on a sunny day. Gentle waves rocked you until a jet ski flashed by, spraying water into the boat and scaring you, believing you were going to capsize?
There might have been a trip to Yosemite in the spring when the waterfalls exploded over mountains and a roar filled the air.
Your task is to write a story in which your character is mesmerized by water. Establish the scene and the circumstances through the use of details. Time, temperature and weather will be critical. Secondary characters will enrich the scene, allowing the use of dialogue to establish conditions, emotions, and experiences.
Have fun with this one.