The sun was setting; Jenny suddenly got the urge to watch the sunset at the beach. She grabbed a towel, changed into her one-piece bathing suit, and picked a secluded part of the beach to sit down on.
As the sun slowly crept lower, Jenny saw the sunlight glistening off the water’s surface; it felt so inviting. She removed her bathing suit and her blonde hair suddenly started to grow longer, lengthening and turning pink with each step toward the ocean. By the time she dove in, it was past her rear.
Jenny then started to feel weird. Several pops and snaps could be felt in her legs; her tailbone also felt like it was straightening out. Her legs began to shrink down while at the same instant; her tailbone grew forward, filling in the crevice of her rear and displacing the opening, which merged into a part of her vagina.
The heel and arch of her feet shrank away as her toes lengthened, becoming webbed in the process. The bone and muscle of her legs shrank away as their mass added to the ever-lengthening tail pushing forward, pink scales emerging quickly in a sensation of thousands of needles pricking her.
Jenny tried to scream out, but all that came from her mouth was a cloud of bubbles. She had sunk beneath the waves. Desperate, she held her breath and flailed her arms in a futile effort to reach the surface. Everything below her waist refused to move; preferring to finish the metamorphosis, which now had a fin spreading wide out the tip of the tail and what remained of her legs and feet settling in as a pair of pelvic fins.
Holding her breath too long and overexerting herself, Jenny’s vision blurred and she passed out. The full moon illuminated the seabed, and the unconscious pink mermaid that lay there.