In July 2014, supported by a Summer Research Fellowship from the Duke Graduate School, I conducted comparative research on two different types of "underwater museums" in Mexico: the Museo Subacuático del Arte (MUSA) off the coast of Isla Mujeres, and two cenotes or underwater cavern systems in Tulum. In a way, they are spatial opposites: MUSA, a museum of sculptures surrounded by seawater, and Dos Ojos, a limestone cavern surrounding veins and pools of freshwater. I was curious to see how each museum—one saltwater, one freshwater—structured different conditions of visitation. What senses and sensations of history does each suggest to its visitors? This research informs the conclusion of my dissertation. The following, roughly cut, video details several additional diving spots that I visited. To skip to the museum research, see minute 10:30.