You think about what you want to wish for next. Amazingly, you rather enjoy being a mermaid. In fact, you enjoy it very much. You swim about, utterly enthralled by your new abilities and at the wonder offered by your new environment. Your mind belonging to a human male recedes in front of this onslaught of new desires and instincts. It feels so completely enthralling and delightful! You feel so free and at ease! No matter if you are female now! Being a mermaid is like flying through the air without halting! You already wonder what will it be jumping through the waves with dolphins, collecting seashells, plunging to depths unknown or feeling the sea in a storm as in a roller-coaster. You'll tease sailors and... At that thought, you turn towards the genie.
"Genie?"
"Yes, mistress?"
"I wish to be the most beautiful mermaid ever to live and to sing better than any human being will ever. I want to be eternal youth and beauty incarnate."
"Of course, mistress," the genie simply says, granting your wish.
The genie already sees your human male mind vanishing, overtaken by new appetites and tastes. Your new wish won't help that but he has got to grant it. So your scales become shinier, your skin absolutely flawless like a porcelain doll's, your breasts firm and round and bouncy and your hair as gorgeous as molten gold. Yes, you are the embodiment of perfect aquatic desire. And you plunge into your mermaid life across the seas and the oceans, intent upon discovering lakes, rivers and other waterways too, always faster and the genie barely keeping up with you.
And as you rest peacefully in a warm shallow pool, your gorgeous figure ends up seducing to the extreme another mercreature. Except it's not a merman. You haven't seen other mercreatures and assume you're the only one anyway. Yet again, this is no merman. It is a gillman, like that of "Creature From The Black Lagoon" of those so prized by a certain Mexican director. This one is male, solitary like many, many of his kind and as all young male wanting to bond and mate as soon as possible to satisfy his urges and get his genes passed on. To settle down and start a family, in other words. He knows what females want and is ready to do anything to keep one. It's their availability that is severely lacking. But this... This... He cannot believe his eyes. She looks human for sure, but also fish and... What a beauty! Such a different beauty than his kind, yes, but so enthralling! He is smitten at once and vows to have you for himself. Odd that he sees no merman or male around, but that is all for the best. He approaches is stealthy strokes through the water and grabs you. You shriek, terrified at this monster that has suddenly appeared. You fight, but he is too strong. Your struggles achieve nothing, especially as he carries you to the surface. He's got two legs and you a fish tail. He carries you back to his lair, his crooning sounds not calming you at all. Your blows and thrashing come to naught. After all, you wished for beauty, not strength. So you call out to the genie, to no avail. Not only you've left him behind and forgot about him but someone else has picked up the lamp. You are no more his master, or rater mistress. You are on your own, in the paws of a gillman intent on making you his mate, whatever long it takes. And he is already dying to have you in his abode...