I walked down the steps to take a swim. Suddenly I lost balanced and fell into the water. The water had felt cold around my privates.
I got out of the water, making my clothes feel heavy. I felt a bit different. Suddenly I could feel my bones begin to shift.
My thighs were beginning to swell making my pants tighter. They started to rip at the seems which had set my legs frees. The tears traveled down to my shoes.
I could felt my feet and skin starting to merge together. My feet were fully merged in to one strange looking appendage as my underwear split with a rip and I can see my crotch exposed. My flesh had looked odd.
My dick and balls are resting on my thighs which began to joined together. I can see my skin moving downward merging my two legs together. I jerked my knees once more and a crunching of bone came from my legs as I felt my skeleton being re-shaped.
Once I had realize that I had became more nervous. I could see that there were new joints in there. My feet slowly extend spreading outward forming a fan that had my delicate skin stretched between its bony tracery, what used to be my toes.
I flopped my new tail on the ground. "Oh god." I said as I closed my eyes tight, wincing in pain. I saw something odd at my waist, my skin is turning darker, then greener, spreading downward.
Soon I saw shiny scales start to gently emerge from my flesh coating me. Fish scales in green and blue with a shimmer in the light spread overred my legs from my waist down. My fingers were webbed.
Under my hands are smooth scales, my genitals are totally gone leaving only a smooth fish tail emerging from my waist downward. I flopped my tail and fell over with a twist of my torso.
Behind me I saw my tail with a ridge that runs its entire length. From my arms a ridge is pushing upward, and from my back at the same time you see a small fin rising from my spine.
Now a hole had opened where my dick used to be. Guess this is how I am going to pee now. I flipped myself over on the Stone hard steps. A hole had formed where my ass used to be too.
"What had happened to me!? I look like a merman. Was it because of the water."