In Greek mythology Medusa was a monster, a Gorgon, generally described as having the face of a human female with living venomous snakes in place of hair. Gazing directly into her eyes would turn onlookers to stone.
Yemoja is a spirit from the Yoruba religion. She is an Orisha and the mother of all Orishas. She is often syncretized with either the Virgin Mary, Our lady of Regla, or Stella Maris. Yemaya, Rainha Do Mar by Nraminhos