In Greek mythology, who is the god of the sea?

Poseidon

Poseidon, the brother of Zeus and Hades, ruled over the seas in Greek mythology. Revered as the god of the sea, earthquakes, and horses, his power was symbolized by his trident, with which he could cause storms and earthquakes. The worship of Poseidon was crucial for the ancient Greeks, who were seafarers and dependent on the sea for trade and warfare. His depiction in ancient art and literature highlights the importance of the sea to Greece and how deities were perceived as directly influencing natural elements and the daily lives of people.