Acis is the god of the river of the same name in Roman mythology. He is the lover of Galatea, who was killed by Polyphemus, but turned into a river deity. He is the son of Faunus and the nymph, Symaethis.
Acis and Galatea[]
Galatea is the daughter of the sea god Nereus and Doris and is one of the fifty Nereids. She was said to be her parents' favorite daughter. Galatea was laying down on the beach with her lover, Acis, when the Cyclops Polyphemus came and saw them. Polyphemus, out of jealousy, grabbed a huge rock out of Mount Etna, and threw it at Acis. The boulder landed on Acis, and Galatea turned his blood into water. She made him a river god of the nearby river, where he gave his name to.
The myth of Acis and Galatea is also mentioned in Greek mythology.