In Greek mythology Poseidon (Neptune to the Romans) was a son of the Titans (Giants) Cronus and Rhea, and the brother of the supreme god Zeus. Poseidon’s attribute is a trident. With it he could stir the waters and split rocks. Poseidon was married to the Nereid, or sea nymph, Amphitrite. Triton was their son. Poseidon also had many other children out of wedlock.
Poseidon is the god of the sea and waters, as well as of horses and earthquakes. This is why so many temples are dedicated to him both along the coasts and inland. On fountains Poseidon is often depicted as a formidable man with a wild beard, sometimes with his companions, the Tritons, which are fish with human torsos.