"We have structured this experiment based both on our needs and the personality tests you two have filled out," the doctor explained.
"If everything goes successfully, the two of you will be the first of a whole new species."
"WHAT?! A new species?" Baxter thought. "What have I gotten myself into?" But as Baxter was contemplating his future, he noticed changes were already beginning in his body.
The doctor continued, "Oh, by the way, you may want to remove the rest of your clothing as your changes progress."
A burning sensation all over his lower half overcame Baxter. He began itching all over, particularly around his toes and waste. As he scratched at himself, he noticed that he was scratching at scales!
It was true, shiny blue and green scales were lining his legs and progressing further and further by the second. Baxter's hips were suddenly forced together by the changes. Rather than being crushed by his merging legs, his penis was forced forward on his body, enveloped and receded behind a slit. Despite the circumstances, watching the forced tranformation of his equipment caused him a slight arousal, and he noticed a new streamlined shape to it as it withdrew from its new silo. Any further inspection was halted as Baxter buckled over as his legs continued to be drawn together from both directions.
"Nurses! Get some water and begin sponging these two off. When they finish, put them in the tank."
As his feet flattened out into a broad fin, Baxter turned and noticed that his fellow test subject was undergoing a similar fate.. But not quite. Up until then, the other young man's predicament was similar, but Baxter noticed some startling, and interesting differences. For one, the other dude was growing breasts! Little by little, but without any doubt, big, firm, areola-tipped breasts, probably a D cup. His hips widened as his (her) waste narrowed. His previously short haired flowed down his back, in deep luxurious red, and his once manly face and features became a vision of green-eyed heavenly beauty. "Beauty?!" "I can't believe I'm thinking about this dude I just met as 'beautiful'.. Fuck, I can't believe I'm turning into a fucking merman!" Nurses began to sponge the two new sea creatures down with water as the transformations continued. The tables were wheeled to the next room and a waiting gigantic new sea habitat.