You were breathing heavily as your hand pound against the shell of this unnatural large clamshell, however with each strike it felt as if you where slamming your hand against solid steel. The water around you began to glow and began to warm up and bubble to almost a kin to a hot tube, it actually felt nice. However, there was no real chance to relax as the small air bubble which was your only source of air began to disappear as the water level began to go up.
“Let me out!” you scream
“I am sorry, just relax and everything will be fine.” Said Alex’s voice on the other side of the clamshell.
You slam your fist against the shell again, not noticing that your swim trunks had melted away as the water level kept going up.
You stop as suddenly you notice that your fist is now smaller and no longer covered with air, your once hairy arm was now silk smooth.
“What the?” you say, your voice sounding smoother and clearly female. You look down to see your massive frame, something you got from your abusive SOB father who tried to make a man out of you by forcing manly sport after sport had melted away. You watch as a pair of breasts begin to form on your chest as you felt something brush the back of your neck as your hair began to grow out.
“I am a woman?” you inquired as you pause as you recall that Alex said their was a chance you could become a mermaid.
You didn’t feel upset about that, deep down you always felt as if you would have been happier if you had been born a woman. Your father had tried to make a man out of you for years whenever you showed signs of any femininity, and he thought he had succeeded in turning you straight.
Your hand moved down and found you no longer had a dick but instead a slit between your legs. Your body shivers as your hands begin to explore your ever-changing body.
Your need for air is forgotten as you find yourself on the bottom of the clamshell pleasuring yourself as your beasts keep growing. Soon you are rocking a chest which any women would kill for, it had to be D cups or so. Your now long blonde hair resting to the side like a golden crown, it was in need of some stylizing but that would come later.
Your already naturally blonde hair turned into a shade of blonde which was impossible to match. Scales began to appear on your legs as they merged together into a single limb as it also grew out about two feet or so. Rich purple scales began to appear around your new tail with some lighter shades mixed in.
Finally it is done, you lie on the bottom of the clamshell no longer a man, but a mermaid as it begins to open.