Neptune (mythology) Neptune (mythology) Neptune ( ) was the god of freshwater and the sea in Roman religion. He is the counterpart of the Greek god Poseidon. In the Greek-influenced tradition, Neptune was the brother of Jupiter and Pluto; the brothers presided over the realms of Heaven, the earthly world, and the Underworld. Salacia was his wife. Depictions of Neptune in Roman mosaics, especially those of North Africa, are influenced by Hellenistic conventions. Neptune was likely associated with fresh water springs before the sea. Like Poseidon, Neptune was worshipped by the Romans also as a god of horses, under the name "Neptunus
Neptune (mythology) that Neptune was offered the sacrifice of a bull would point to an agricultural fertility context. In Rome Neptune had only one temple. It stood near the Circus Flaminius, the Roman racetrack, in the southern part of the Campus Martius. It already existed in 206 BC. It appears on a coin struck by Gn. Domitius Ahenobarbus around 40 BC doubtless because of a restoration carried out by this personage. It contained a famous sculpture of a marine group by Scopas Minor. The Basilica Neptuni, was built on the Campus Martius and dedicated by Agrippa in honour of the naval victory