A creation myth is a story or explanation of how the world was created. It's a way to explain why things are the way they are. Many cultures have their own creation myth, which often includes gods and magical creatures. For example, the ancient Egyptians believed in the story of Atum creating the world from the sea. In this myth, the god Atum separated the waters of chaos and created land, the sun, and the stars. This myth helped explain why the Egyptians were blessed by the sun's warmth and light.