Ποσειδώνας is the ancient Greek god of the sea, earthquakes, and horses. He is one of the twelve Olympian deities and is often depicted holding a trident, a three-pronged spear. Ποσειδώνας was known for his temperamental nature, which could cause storms and earthquakes, reflecting the unpredictable nature of the sea. In Roman mythology, Ποσειδώνας is equivalent to Neptune. He was worshipped by sailors and fishermen, who sought his favor for safe voyages. Temples dedicated to Ποσειδώνας were built in various coastal cities, and he played a significant role in many myths, including the famous story of the Trojan War.