Underwater cultural heritage, or marine archaeology, involves the study of ancient human objects, such as shipwrecks, found beneath the water’s surface. Studying underwater cultural heritage sites can help us understand the past, connect us to our ancestors, and teach us lessons on how the environment and human error can impact each other. The collection below features highlights from previously explored underwater cultural heritage sites and activities that encourage the use of observational and reasoning skills to try to unravel mysteries from the past.