Do you want to become a mermaid? This mod will bring you!
Now it's possible mermaid present on GTA San Andreas.
It works for you or make mermaid as ped/sea creature.
Download from this link:
Replace sea creature like dolphin, shark, or turtle on gta sa with mermaid. Use this mod to do it
If you wanna spawn a mermaid near you on sea, you can use this mod