Emily was swimming in the ocean for around 8 hours now.
Her feet had transformed into fins,allowing her to swim trough the sea at a high speed.
Her legs were covered in neongreen scales that made their way to her ass.
She had become way more feminine.She had a perfect hourglass-like body,her breasts were ample,certainly DD-cup size and her ass was round and soft.
She loved the water,she almost forgot her family and friends.She just had so much fun,and she could finally fulfill her fantasies.
We skip to 10 hours...
Emily noticed that it was getting dark.
"Maybe...i should go now.It was fun and all,but i'm a bit tired..."
She swam to the shore.Nobody was on the beach right now so she wouldn't be seen by anyone.She sat on the sand,admiring her now changed body.
"My goodness...!Is...is this really my body?!I never had such wonderful breasts or such a round butt...are those scales?Yes,they are!And my feet...what happened to my feet?!They are fins!Oh no,can i walk...?"
She tried...and failed.As soon as she tried to stand on her now fin-turned feet,she fell over.
"Oh no...i thought this was all a joke!I thought i just could breathe underwater with this potion or something..."
She lied down on the sand and started to think what to do next,when suddenly her womanhood started to feel warm...
"What the...?"
Just then she felt like having sex.She moaned and her body twitched all over.It was the feeling of incredible good sex.
"Oh...yes..."
Her breasts started to grow,one last time,to e-cups.She fondled them and moaned even more.Her legs shaked and started to fuse together.Despite her muscles changing and her bones rearranging,she felt incredible good.Her mind was assaulted with pictures of her swimming in the ocean,having sex with someone and complete freedom.
Her legs had finished fusing,and her feet(or fins)started to become one large fin.Her breasts had finished growing and were held perfectly.As soon as all transformations were over,she reached the climax,cumming and panting.
She then admired her body,touched her fish tail and looked for her womanhood,which was still there were it belonged.
Then,she turned around.Behind her was the city she was born in.Her family and friends were there and presumably waited for her to return.
Then she turned around again and saw the ocean.She thought of the freedom she would have,almost unlimited adventures would await her.She asked herself if there were other merpeople like her now.
"I'm going into the ocean.I will live my new life with joy.I'm sorry,everyone...but this time,i have to think about myself!"
She used her hands to crawl into the water and swam away with powerful strokes of her tail...
"And maybe...when i'm tired of this new life,somebody can help me return...",she thought to herself...