Final answer:
Creation myths focus on the sky and the sea because they symbolize the origins of life and creation, are seen as the domains of deities, and are essential for sustaining life. These elements are prominent in various cosmologies, including Greek and Biblical narratives, demonstrating their central role in religious and cultural perceptions of the universe.
Step-by-step explanation:
Creation myths often focus on the sky and the sea because they are traditionally associated with origins of life and creation. In many origin stories, the sky and the sea are symbolic of elements that support life and the abode of deities. The ancient Greeks, for example, had cosmologies that included the deities Erebus and Nyx, who represented darkness and night, and from their lineage came the Earth and the heavens, including the sky and sea.
In the earth-diver myths, which are a common type of creation story, the cosmos is organized out of chaos, with a deity often utilizing elements like mud from the sea to create land and then life. Furthermore, celestial events and bodies were understood as expressions of divine will, and the sky served as a means to interpret the actions of the gods. Considering the wide variety of ways these themes are woven into the fabric of creation stories, such as the Biblical account where God creates the oceans and fills them with life, it is clear that sky and sea hold significant cultural and religious importance across different civilizations.