POSEIDON (NEPTUNE) He was son of Cronus and Rea, and Zeus's brother. He was the god of the sea. He could stir up earthquakes and sea-storms. He considered horses and bulls sacred. He was shown as a very tall man, wearing a beard and carrying his trident, which was made by the Cyclops. Poseidon was a vindictive and dangerous god, and lived in a splendid palace beneath the sea and he drove his swift coach over the waters.