Poseidon, brother of Zeus, embodies all that is great and terrible in the Sea. He brings forth life, and takes it away. He can protect those at sea, or destroy them. Poseidon was the master of lakes, rivers and streams. He had the power to shake the Earth at will, splitting mountains and rolling them into the sea to create Islands. His rage was expressed in the great storms of the seas. Anyone taking a journey over water would do well to honor Poseidon ahead of time.