Galatea is the mermaid of the well, she is a white mermaid trapped inside a well, at first she will try to befriend you by doing a talk but in the the end of the conversation she will beg you to give to her your legs so she can be free. However in reality Galatea is just a corpse used like a puppet controlled by Pygmalion who is the well itself and in reality he wants to eat you as a whole for then using the remaining of your lifeless body as a new mermaid-like vessel for the next victim.