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A 2024 Sibert Honor Book A 2024 ALSC Notable Book "(A) deeper dive into marine archaeology...enlivened by photographs, diagrams and archival images, describes sunken vessels as ‘time capsules’ and the ocean floor itself as ‘the world’s greatest museum.’ But what extraordinary things have been found, despite the depth and waves!"—The Wall Street Journal From National Book Award–winning author Martin W. Sandler, here is a fascinating look at what shipwrecks reveal about our world’s past—and how exploring them led to the development of a whole new field of science: marine archaeology. Most of the world’s ocean floor remains to be discovered. In fact, it’s estimated to be home to over 3 million sunken vessels and countless treasures of the past.