Neptune was the name that ancient Romans gave to the Greek god of the sea and earthquakes, Poseidon. He was the brother of Jupiter (Zeus) and of Pluto (Hades). After the defeat of their father Saturn (Kronos), the three brothers divided the world in three parts, each to be ruled by one of the three brothers. Jupiter took the sky, Neptune the sea and Pluto the underworld. Neptune had the reputation for having a violent temper. Tempests and earthquakes were a reflection of his furious rage. He was generally depicted as a bearded man holding a trident and seated in a seashell drawn by sea-horses. One day Neptune saw the water nymph Amphitrite dancing in the island of Naxos and fell in love with her. He promptly asked her to marry him but unfortunately she refused. However, not discouraged by Amphitrite's refusal, Neptune sent one of his servants, a dolphin, to look for her. The dolphin found her, and pleaded Neptune's cause so persuasively that she changed her mind. As a reward for finding and returning Amphitrite to him, Neptune immortalized the dolphin by placing it in the heavens as the constellation Delphinus. Neptune and Amphitrite had several children. Among them was Triton, whose name was given in 1846 by William Lassell to the principal moon of the planet Neptune.
Poseidon was the Greek god of the sea and earthquakes. Poseidon was depicted as a bearded man with long hair, holding a trident and accompanied by dolphins and fish. He had the reputation for having a very bad temper. The symbol of Poseidon's power was the three pronged spear known as the trident.
The storms and earthquakes were a reflection of his furious rage. When he was angry, he split mountains and threw them into the sea to make islands. Poseidon was the brother of Zeus and Hades. He married Amphitrite who was one of his attendants, the Nereids. The Greek god Poseidon was known to the Romans by the name of Neptune.