Galatea is a character from Greek mythology who was very unusual because she was made out of stone but was given life by a powerful god called Aphrodite. Imagine making a statue of a person out of clay or legos and then having someone come along and magically bring it to life!
Galatea fell in love with a man named Acis, but unfortunately, a jealous monster, Polyphemus, also had feelings for Galatea and was really angry about her love for Acis. In fact, Polyphemus was so angry that he ended up killing Acis. This made Galatea very sad and she turned Acis into a river, so that he could still be with her in a way.
Despite the tragic ending to her story, Galatea's story is still told and remembered today, thousands of years after it happened, as an example of the power of love and the dangers of jealousy.