In Vodou, Ayida-Weddo is a loa (spirit of Haitian vodou) of fertility, rainbows, snakes, wind, water, and fire. She is known as the Rainbow Serpent and goes by many other names, including but not limited to: Aido Quedo, Aido Hwedo, and Aida-Weddo. She is included in some African creation stories as well.
"In the beginning there was a vast serpent, whose body formed seven thousand coils beneath the earth, protecting it from descent into the abysmal sea. Then the titanic snake began to move and heave its massive form from the earth to envelop the sky. It scattered stars in the firmament and wound its taught flesh down the mountains to create riverbeds. it shot thunderbolts to the earth to create the sacred thunderstones. From its deepest core it released the sacred waters to fill the earth with life. As the first rains fell, a rainbow encompassed the sky and Danbala took her, Ayida Wedo, as his wife. The spiritual nectar that they created reproduces through all men and women as milk and semen. The serpent and the rainbow taught humankind the link between blood and life, between menstruation and birth, and the ultimate Vodou sacrament of blood sacrifice."