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NOAA (National Oceanic and Atmospheric Administration) has an online gallery that contains images of submerged shipwrecks, artifacts, and other cultural treasures that are the focus of several expeditions. Click on any image to view a larger version and additional information. In addition, the site offers a comprehensive look at NOAA's 200-year history of ocean exploration through a series of chronological essays. Also included is a rich selection of historical quotations, arranged thematically, that capture the many advances, challenges, and misunderstandings through the years as both early and modern explorers struggled to study the mysterious ocean realm.