Poseidon

Poseidon in Greek mythology

In Greek mythology, Poseidon is the god of the land and the sea (and therefore also called Pelagaios), rivers, springs and drinking waters.
Son of Cronus and Rhea and brother of Zeus lived on Mount Olympus or at his palace in the depths of the sea, where he lived and his wife, the Nereid Amphitrite. According to one version he grew in Rhodes, where after their association with Alia, sister of Telhinia,were born six sons and a daughter, Rodi, who gave her name to the island.Poseidon was the father of Theseus,  Procrustean ,Skirona and giants: the twin Otou and Ephialtes (in association with Ifimdeia, daughter of the king of Thessaly) of Tityus (from Elara, daughter of Orchomenus and Orion (from Euryale, daughter of Minos). Yet  he considered tamer of the first horse and begetter of the mythical horse Pegasus.
The name of  god  Nethuns is Etruscan and was adopted in Latin for Neptune in Roman mythology (Neptounous). Both were sea gods analogous to Poseidon. According to inscriptions, Poseidon was worshiped at Pylos and Thebes and integrated into the Olympian gods as the brother of Zeus and Hades. Poseidon gained many children. There is a Homeric hymn to Poseidon, who was the protector of many Greek cities, although he lost the contest for Athens to Athena.
As god of the sea, Poseidon was traveling with gold chariot on the waves that Shaker, while of earthquakes. With the trident could both create storms and calm the waters. Considered the patron saint of sailors and fishermen and even as responsible for geological phenomena such as earthquakes, he was offered sacrifices and prayers for soil stability and security of the buildings, while honored and horse racing. His symbols were the trident, fish (usually tuna or dolphin) and occasionally the horse or bull.

Poseidon was a major god of several cities: in Athens, he was second only to Athena in importance, while in Corinth and many cities of Magna Graecia he was the chief god of the city. In benign aspect, Poseidon was presented creating new islands and offering calm seas. But when enraged, beating the ground with his trident he caused chaos, earthquakes, shipwrecks and drownings at sea. In the Odyssey, resentment of Poseidon against Odysseus averted resourceful hero since his arrival in his homeland, Ithaca. Sailors prayed to Poseidon for a safe voyage, sometimes drowning horses as a sacrifice.
According to Pausanias,  Neptune was one of the caretakers of the oracle at Delphi before  take control by the  Olympian Apollo. Apollo and Poseidon worked closely in many places: in colonization, for example. The Delphic Apollo provided the approval of human settlement in colonies, while Poseidon over the colonists helped by giving them the purifying water for the sacrifice that involved the establishment of the colony. The Anabasis of Xenophon describes a group of soldiers in 400-399 BC singing to Poseidon a paean, a kind of hymn normally sung for Apollo. Like Dionysus, which affects the maenads, Poseidon and caused certain forms of mental disturbance. A Hippocratic text of 400 BC, the sacred Diseases says he was accused of certain types of epilepsy.