Some beaches don't have any buildings near the fishing dock, other then the harbor, but just a year ago, a massive factory was just built right next to it, but they were keeping the oil in tubes, as the fish were fine. The problem was as they were finished building the factory, the fish mutated to the size of humans.
The scientists who work for the factory however, were excepting women to be test subjects for the factory, to test out the mutated fish, and see what they do. Their first victim was a woman who was an aunt that had no children, and had no lifestyle. So, what the employees did was strap her arms to a hole like she was a piece of clothing, and then stripped her down, leaving her in nothing, but a white strapless bra. The mechanical machine her arms were in brought her near the ocean as her legs hung there.
As the woman's legs were pointing to the water, a white fish notices them, and jumps at her. The white fish then starts to eat the woman, but only manages to swallow her legs, as its tongue connects to her entire body. The eyes of the white fish closed, and the woman's hair started turning white, made her breasts become E-Cup sized while gills grow on her neck. The employees using the machine, brought the woman back, unhooked her, and placed her in a bath tub filled with water. They released the woman into the water a month later. Thus was born the mermaid factory, a place where women can go to change their lives.