You look out onto the pool deck to see two mermaid tails sliding into the pool, one was definitely Topaz’s blue tail, the other was bright orange and unfamiliar. You walk outside to see two mermaids swimming along surface; it was Topaz and Caroline.
“Caroline, you had sex with Topaz?” You ask.
“I couldn’t pass up such an offer.” Caroline said proudly. “An offer, I believe, she’s extended to you, as well.”
“Yes… she did.” You think for a moment. “Oh what the hell.” You strip completely naked and dive into the pool. “I want to be a mermaid, too.”
“Don’t you mean merman?” Caroline asks.
“No, a mermaid. Don’t ask me to explain why; this is just what I want.” You turn to Topaz. “You can do that, right?”
“I can.” She answers. “Truth be told, it would have happened that way anyway. And, yes, I would have told you before we would’ve began.” Topaz turns to Caroline. “But, since you’re the one that has feelings for him, would you like to do the honors?”
“You mean… is that true?” You ask Caroline.
“Yes, it is.” She responds. As she starts to swim toward you, she stops. “Wait, if I turn him into a mermaid, we’ll all be stuck in the pool.”
Topaz looked saddened. “It’s time I, what’s the expression, came clean. I, as well as you two once Neil is a mermaid, could turn my tail into legs at any time; the mansion Neil found me in was mine alone, there was no Marine Biologist studying me. Everything was to test and see if you were willing and worthy of my gift.”
Wasting no time, Caroline pushes your member, already stiff in anticipation, into her clit. You both thrust hard and fast, each one furthering the changes to your body. Your hair lengthens, your waist and shoulders narrow, your hips widen. From there, the thrusts cause your breasts to swell. Soon they reached just shy of C-cups.
More aroused than ever, you feel the change you’ve been most waiting for. You moan in a truly beautiful feminine voice as your legs begin merging together, lavender colored scales appearing throughout. Once the tail finished merging. Both you and Caroline scream in an explosive orgasm; yours lasting until your manhood retreats into your tail and forms your feminine organs.
You lie on the deck exhausted. “Well.” You say, panting. “As much fun as this has been, let’s all head inside. We wouldn’t want anyone to see us like this.”
Caroline and Topaz nod in agreement. All three of you climb out of the pool and split your tails into legs. As you head toward the couch, Caroline grabs your arm.
“Wait, Neil. Or… um.”
“Call me Nell.”
“Nell. You can sleep with me if you want. You don’t mind the couch, do you Topaz?”
“Not at all. You’re the love fish here.”
With that, Caroline and Nell head upstairs to bed exhausted but eager to head to the beach tomorrow.