What does Poseidon symbolize?

Answer 1

Poseidon was the lord of the ocean and the most violent and jealous of the gods. Poseidon took posession of a chain of islands and named them Atlantis and the surrounding waters the Atlantic, they were named after his first born of ten son's Atlas.

Answer 2

The symbol of Poseidon's power was the trident, or a spear with three points, with which he used to shatter rocks, to call forth or subdue storms, to shake the earth, and the like.

This is my perspective of the situation; there were three head or main Gods Poseidon, Zeus, and Hades. I think that the three points represented the union between them.

Answer 3

it means that he's cool