Hydrography is the scientific study of the physical features of bodies of water, including oceans, seas, rivers, and lakes. This discipline involves the accurate measurement of water depth, the mapping of the seabed, and the analysis of currents, tides, and salinity gradients. By collecting data such as bathymetry—the measurement of depth—and analyzing water flow dynamics, hydrographers create detailed charts and models that provide essential information regarding the physical environment. The collected data is crucial for various applications, including understanding marine ecosystems, predicting coastal changes, and supporting navigation across aquatic passages.