What are two metaphors in the book of Treasure Island?

In "Treasure Island," the sea serves as a metaphor for adventure and the unknown, representing both the potential for discovery and the dangers that accompany it. Additionally, the character of Long John Silver embodies the duality of human nature, acting as both a mentor and a villain, symbolizing the complexities of morality and loyalty in the pursuit of treasure. These metaphors enrich the narrative by highlighting the themes of exploration and the blurred lines between good and evil.