In Search of the Castaways, or The Children of Captain Grant is a sweeping adventure novel by Jules Verne that follows a daring global quest to find the missing Captain Grant. When a message in a bottle is discovered inside a shark, Lord Glenarvan and his companions — including Captain Grant's two determined children — embark on an epic expedition across South America, Australia, and New Zealand. Guided only by partially destroyed coordinates and cryptic fragments of text, they face treacherous landscapes, natural disasters, and encounters with unfamiliar cultures in a race against time. Brimming with suspense, warmth, and vivid geographical detail, Verne's novel celebrates the spirit of discovery and the resilience of the human will. It masterfully blends thrilling adventure with scientific curiosity and emotional richness, making it one of his most ambitious and beloved works.