Hippocampus (mythology) Poseidon (or Roman Neptune) often drives a sea-chariot drawn by hippocampi. Thus hippocampi sport with this god in both ancient depictions and much more modern ones, such as in the waters of the 18th-century Trevi Fountain in Rome surveyed by Neptune from his niche above. The appearance of hippocampi in both freshwater and saltwater is counter-intuitive to a modern audience, though not to an ancient one. The Greek picture of the natural hydrological cycle did not take into account the condensation of atmospheric water as rain to replenish the water table, but imagined the waters of the sea oozing back
Neptune (mythology) In another place of his work, book VI, Nigidius wrote that, according to the Etrusca Disciplina, his were one among the four "genera", types of Penates: of Iupiter, of Neptune, of the underworld and of mortal men. According to another tradition related by a Caesius, also based on the same source, the Etruscan Penates would be Fortuna, Ceres, Genius Iovialis and Pales, this last one being the male Etruscan god ("ministrum Iovis et vilicum", domestic and peasant of Jupiter). Neptune is depicted in the 7th and final movement of Gustav Holst's orchestral suite 'The Planets', subtitled 'The Mystic' as Holst