The Coral Island: A Tale of the Pacific Ocean by R.M. Ballantyne is a classic adventure novel that follows three young British boys-Ralph, Jack, and Peterkin-who are shipwrecked on a remote coral island in the South Pacific. With no adults to guide them, the boys must learn to survive in their new environment, using their resourcefulness and optimism to build shelters, gather food, and explore the beauty and challenges of the tropical island.

At first, the island appears to be a paradise, and the boys enjoy the freedom, camaraderie, and excitement of their adventure. However, their idyllic life is soon disrupted by the arrival of native warriors and ruthless pirates. The boys witness firsthand the violence and moral complexities of the world beyond their sheltered lives, as they encounter both the nobility and brutality of different cultures. Despite these challenges, the boys strive to maintain their values, help each other, and survive.

The Coral Island explores themes of innocence, friendship, courage, and the clash between civilization and "savagery." Ballantyne, a firm believer in Christian morality, uses the story to highlight the virtues of cooperation, bravery, and compassion in the face of danger. The novel, published in 1858, also reflects Victorian attitudes toward colonialism and indigenous peoples, presenting an idealized view of British resilience and heroism. The Coral Island influenced later works, most notably William Golding's Lord of the Flies, which presents a darker view of human nature under similar circumstances.