What natural phenomenon is associated with Poseidon?

Poseidon, the ancient Greek god of the sea, is primarily associated with earthquakes and storms. He was believed to wield a trident, which he could use to create violent waves and cause seismic activity. This connection made him a powerful figure in mythology, reflecting the unpredictable and often destructive nature of the ocean and earth. Additionally, he was also seen as a protector of sailors and a deity of horses.