After a moment's thought, Bree decided she wasn't afraid. She'd come to this shop to transform herself, and she'd be damned if she'd be conservative about it! Okay, replacing your trusty pussy with a dolphin cock wasn't exactly conservative, but why stop at the cock? Might as well change the rest of your body to match.
Bree closed her eyes. She concentrated on her crotch, willing the changes to restart. "Come back, dolphin skin," she whispered. "Please, come back."
Suddenly, she felt it. The warm, soothing pleasure of the spreading skin returned. Bree opened her eyes and smiled at the rubbery grey flesh spilling over her thighs and belly. Her hand reached for her eager cock, which was excitedly snaking around of its own accord, prehensile limb that it was. She grabbed it and began stroking its length as she sought an outlet for her growing arousal.
"What the fuck are you doing?!" Krystal screamed, now fully white again.
"Just lettin' mah changes do their thang," Bree answered. "I want this, Krys. I wanna be a dolphin babe. I know i ain't ever gonna be able to explain it, but I gotta do it to be me. I guess I just ain't gonna never go home. I thinkin' da sea my home now."
"Damn, Bree," sighed Krystal. "I guess that's your choice. Heh, maybe I could come with you. All my friends are in on the secret, and my relatives come in two flavors: dead and shitbags. 'Course, I'd need to make a change that'd let me live underwater first."
"Sho' thang," said Bree, returning her attention to her penis and ripidly expanding dolphin hide. "We get right on dat as soon as I done here, cool?" Krystal nodded.
As Bree jerked herself off, the thick, shiny hide spread its greyness across her torso and down her limbs. Unlike Krystal's stint as a black girl, the change didn't fatten up her tits and ass. Instead, it evaporated her fat deposits and replaced them with lean, wiry muscle. As the grey skin grew to her hands and feet, Bree felt something growing between her fingers and toes. Examining her free hand, She saw a filmy webbing developing and growing more substantial by the second. A quick glance down at her feet revealed the same thing happening to her toes, which were also elongating.
The black (grey?) girl suddenly gasped as she felt a dorsal fin sprout from her back, followed by a set of fins on her forearms and calves. The more Bree saw of her transformation, the hornier she got... and the harder she jerked her cock. Krystal also found herself strangely aroused by Bree's chosen metamorphosis and began playing with her own massive cock, nutsack, and pubes.
As the dolphin skin grew over Bree's face, the African-American girl felt her nose vanishing into her head, as if it had never been there, and her teeth sharpening. The skin finally covered Bree's scalp, and her entire head of hair fell out. Bree smiled as she watched it happen in the Changing Room mirror. Once upon a time, she would have been horrified at the sudden loss of her hair. Now she thought the baldness made her beautiful, like the dolphin girl she was destined to be. Bree shuddered in intense pleasure as she felt what could only be her blowhole develop on the back of her head.
At that moment, Bree felt herself go over the edge. Panting heavily as the ecstasy overtook her whole body, the dolphin girl did her best to aim her dong at Krys as she spewed endless loads of cum from her tentacle-like member. As the gobs of dolphin jizz splattered her body, Krystal felt her own climax, ropes of cum shooting from her meaty dick like a geyser.
Once she'd recovered from her mind-blowing orgasm, Bree stumbled back to the mirror and took in her body. She truly looked like a perfect hybrid of human and dolphin. Her general shape was human, but her entire body was now completely devoid of hair (even her eyebrows were gone) and built with the muscular frame of an Olympic swimmer, her nose had been replaced with her new blowhole, her fingers were webbed, and her feet looked like organic diving flippers. What had once been a normal human girl was now a true goddess of the sea!
"DAAAAAAYYYYYYYUM!!" Bree gasped. "I lookin' so fuckin' GOOD!"
Krystal tried to stand up, still a little woozy from the intensity of her orgasm. She walked over to Bree and stroked her slippery rubberlike hide. "W...wow!" the green-haired punk choked out. "You fucking l... you look... you look so goddamn hot!" She gave the Cetacean girl a tender kiss on the cheek. "My sexy dolphin."
The two girls shared a loving smile, gleefully anticipating their new life together beneath the waves.