Poseidon is the ancient Greek god of the sea, earthquakes, and horses, often depicted as a powerful figure wielding a trident. He was one of the twelve Olympian deities and played a significant role in Greek mythology, influencing not only the natural world but also human affairs, especially those related to the sea and maritime activities. As a major deity, Poseidon was revered by sailors and coastal communities, who sought his favor for safe voyages and bountiful catches.