Deep-sea Monster

During a deep-sea exploration, the vessel mysteriously lost control and was wrecked upon impact. As the crew attempted to escape, they were startled by the sight of a gigantic eye. Is this an illusion generated by the crew members while being in the depths of the sea, or is there truly such a massive unidentified creature living in the deep sea? The X Exploration Special Ops Team is dispatched to the scene to investigate the truth.