With the heatwave kicking my ass, the beach seemed like the only way to cool off. I packed up my chair and towel before setting off for the ocean, ready to beat the sun. I was completely ignorant of all the missing person reports from the destination my car rumbled towards.
I laid my towel out on the sand, hunkering down beneath the umbrella set up to shade me from the harsh rays of the sun. As I opened the cooler to remove a beer, a strange and enchanting tune took control of my mind. I put the can back before standing, turning my head toward the tune. It was coming from an outcropping of rock near the shore, luring me near until I made out the figure on the sea stack. My eyes went wide as a beautiful woman sang at me, where her legs ought to be there was instead a fishtail.
She caught my eye and smiled, beckoning me as she leaped from the rock, entering the water with almost no splash. I wasn't sure if it was the mermaid's beauty or her alluring song but I followed her into the water fully clothed and under her spell. She met me halfway, grabbing my body to stop me from sinking before she leaned in. Her lips attached to mine, working her tongue into my mouth, distracting me as my body began to change.
She stroked my matted hair, lengthening it as it became blue and purple with an iridescent sheen. My lips became plump as my eyes widened and changed to match my new hair's hue. Her delicate fingers traced my waist, crushing it inwards and flattening my stomach into a seductive midriff. My shirt tightened, turning to a tiger print bikini top as she kneaded my expanding chest, filling them with soft fat until I had a perky pair of tits that were sensitive to the touch.
She palmed my ass, repeating the same process as she did on my chest. My hips widened to accommodate my growing ass as dough flesh poured into my thighs from seemingly nowhere. My legs started to merge together, knitting the skin into a single limb as my feet flattened to a fin. Scales emerged from onto my new tail, coating it thoroughly until it was as vibrant as my hair. My sex receded into my pelvis causing me to moan as it became the female counterpart
She finally pulled away much to my dismay before giggling and swimming away. I went to follow her but saw my dainty arms which led my eyes to the rest of my new body. I gasped at my bouncy breasts and thick hips but mostly at my shimmering tail fin. A few gropes left me excited before the mermaid returned, waving me to follow her. Seeing no other choice, I followed, ready to see what this new life held for me.