Legends of Greece and Rome
Poseidon
As Zeus took control over the heavens and Hades reigned over the underworld, Poseidon was master of the seas. He carried a trident and was known for his unpredictability. He was married to the water nymph Amphitrite.
Like Zeus, Poseidon did not seem to hold much store in the virtues of matrimonial fidelity and took many lovers. Unlike Zeus, he didn't seem to care much about the physical appearence of his conquests. One of these was the Gorgon 'Medusa' who bore him a giant child named Chrysaor. Polyphemus (the cyclops who so hindered Odysseus) was also one of his offspring.
Poseidon was also the god of horses and earthquakes. His horses can be seen galloping though the surf on the crest of waves. The only sacred site that has been attributed to Poseidon was Atlantis. It is said that he grew angry with the people of this island and sent an earthquake that sent it crumbling into the depths of the sea.
Poseidon was known as both benevolent and unforgiving. He was as unpredictable as the seas he was master over. He has been known to calm the waves so that ships could pass safely, and then he is known for his destructive behaviour with others. Like a child, he could be petulent and selfish at times, and at others he had the attributes of a protective father. It is clear that his reign over the unpredictable oceans was a fitting one.
Source: 'Myths and Legends of Ancient Greece and Rome'
Morgan J. Roberts