Discover the mysterious world of shipwrecks and undersea treasure -- how they are recovered and preserved. Here is a spectacular and informative guide to some of the world's most significant shipwrecks. Superb full-color photographs of submerged wrecks and their lost cargoes and treasures offer a unique "eyewitness" view of ships and the lives of those who sailed in them. See the beautifully preserved figurehead of the Hamilton wreck, the five-hundred-year-old elephant's tusk recovered from the bottom of the ocean and scissors that still cut paper and cloth after two hundred years beneath the sea. Learn how the wreck of the Mary Rose was raised from the seabed, why Grace Darling became a hero, how a deck seat converts into a lifeboat, how shipwrecks are located and different preservation techniques used by underwater archaeologists. Discover what caused the "unsinkable" Titanic to sink, the use of the giant light bulb, harmonicas that still play after one hundred years underwater and the hazards faced by ships at sea, and much, much more!