The film that most impressed me when I was a kid was Jason and the Argonauts. My favorite scene in the movie was when Poseidon appeared out of the ocean and saved the Argonauts from the rocky cliffs that threatened the ship. I later learned that he was supposed to be Triton, the son of Poseidon. Here are some coins with Poseidon on them. When I purchased the tetradrachm, I thought that the figure on the reverse was Zeus but one of our Ancients Forum members pointed out the trident.