Neptune (Latin: Neptūnus) is 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 is the brother
of Jupiter and Pluto; the brothers preside over the realms of Heaven, the
earthly world, and the Underworld. Salacia is his wife. Neptune was likely
associated with fresh water springs before the sea.