Laura gasped. It was too late for her to leave the pool and remain unchanged. Her transformation requires a contact with saltwater which was very comfortable, because she didn't have to worry with the rain, getting accidentally wet etc. She fully transformed only few times, because she didn't want to awake her mermaid nature which would make her move back to ocean like Alexis did.
Because she experienced transformation only few times, it was very intense feeling for her to sense her legs joining, emerging scales and sprouting the tailfin. She took off her coat, but it was too late for her black bikini bottom which got torn apart by her merging legs. Laura noticed that Alexis was watching her transformation too, but she couldn't say what she was thinking at the moment. It was the first time when Alexis saw her cousin transformation and she would see her mermaid form soon as well.
Then first scales got some orange colour. Then also emerged some white and dark orange scales. Indeed, she was a koi mermaid- her tail was referring to this asian fish, which was a symbol for prosperity and luck. This kind of tail matched perfectly with her pale skin, black hair, and black bikini top. Finally, Laura could say that Alexis was amazed by her mermaid form.
"Take it off, we don't wear it here" said Alexis and reached to Laura's bikini top and took it off for her. Laura protested too late which let the golden tail mermaid to throw away last piece of her clothing. She was still shocked and ashamed, so she covered her breasts with her hands, and she noticed some change in her behaviour. Alexis was more alluring towards her... Or maybe Laura started perceiving differently?
"So what are we going to do with him and you, cousin?" Asked Alexis and moved closer to Laura. Her face was just few inches away. Because they were in the pool, and in order not to drown, their tails were slowly moving back and forth, which was making them striking and lightly rubbing each other. Laura was still covering her breasts with hands, but she could feel Alexis nipples on the opposite side of her hands. She tried not to look to check, but she could feel that her nipples were erect. Laura didn't wat to uncover hers- they were erect too.
"You know that things are working differently here in the water, do you remember?" asked Alexis and put her hand on Laura's arm. She was conflicted- on the one hand she came here to rescue you, and on the other hand she dived not only into this pool, but also into her mermaid nature that started to revalue her perception...