Which Roman deity is known as the god of the sea?

Neptune is known as the god of the sea in Roman mythology. He is often associated with water, storms, and horses and is the Roman counterpart to the Greek god Poseidon. Sailors would invoke Neptune’s favor for safe passage over the oceans, and he was depicted with a trident, symbolizing his dominion over marine realms. While Jupiter is the king of the gods and associated with the sky and thunder, Pluto rules the underworld, and Mercury is the messenger god associated with commerce and travel. Thus, Neptune stands out distinctly as the deity governing the seas.