Domain: Sea, fresh water, horses, earthquakes Symbol: Trident, horse, dolphin Greek Equivalent: Poseidon
Overview
Neptune is the Roman god of the sea and of fresh water, brother of Jupiter and Pluto in the threefold division of the cosmos — sky to Jupiter, the underworld to Pluto, and the waters to Neptune. In the earliest Roman religion, before Greek influence arrived, he was more a god of springs, streams, and rivers than of the open ocean: a deity of the practical water sources on which farms and cities depended. Only later, through the identification with Poseidon, did he acquire full mastery of the sea, its storms, and the earthquakes the Greeks attributed to the "earth-shaker."
Much of his character came with that identification. He wields the trident, the three-pronged spear with which Poseidon split rocks and raised waves, and he is drawn by horses across the water — the animal being sacred to him as it was to his Greek counterpart, who was said to have created the first horse. The dolphin accompanies him as a creature of the deep. Through the horse he was also honored as Neptune Equester, patron of horsemanship and of the races run in his name.
His festival, the Neptunalia, fell on July 23rd, in the parched heat of high summer when water was scarcest and most prized. Celebrants raised temporary huts of branches and foliage for shade beside springs and streams, drank, and prayed against drought — a rite fitting a god first known for fresh water rather than salt. Horse races at the Circus Maximus were dedicated to him, binding his equestrian associations to the great Roman spectacles.
Compared with Poseidon, who looms large and volatile through Greek myth, Neptune is a quieter, more abstract figure with few stories of his own. His importance to Rome was less mythological than practical: a guarantor of the water that sustained life, honored more in cult and calendar than in narrative.
Related
- Poseidon - Greek equivalent
- Jupiter - Brother
- Pluto - Brother, lord of the underworld
- Roman Mythology Index