What are the Zeus and Poseidon fighting over?

Zeus and Poseidon often find themselves at odds over control of the seas and the land. In mythological narratives, they compete for dominance in their respective realms—Zeus ruling the sky and Poseidon governing the oceans. Their rivalry can also manifest in disputes over mortal affairs and the favor of humans, particularly in tales where they vie for worship and recognition among the Greeks. Ultimately, their conflicts highlight the themes of power and the balance between different domains of nature.