As soon as Emily hit the water,the potion started working.
She suddenly felt gills on her neck,which immediatly started working.
On her hands and feet grew webbing.Her skin became more sensitive.
"This feels so great!Now,i can explore the ocean!"
She swam off into the blue depths...
2 Hours later...
The potion still transformed Emily more into a mermaid.
She wasn't aware of it,but she changed more since the last two hours.
Her feet weren't webbed anymore.They have transformed into fins.
Scales slowly grew up her legs.Neongreen scales,to be exactly.
Her breasts had grown,too,from b-cup to c-cup.She noticed,how tight her bikini suddenly was.
"Oh my...well,i don't need that junk anymore!"
She took off her bikini and continued to swim nude through the sea.
6 Hours later...