Hydrography is the science that measures and maps the seafloor using sonar or lasers mounted to ships, drones, and sometimes airplanes.  Hydrographic surveys are used for creating navigational charts, geological maps, biological inventories, marine archeology, search and rescue, and many other purposes.  South Mississippi has many companies, government agencies, and research institutions that are leaders in hydrographic science.  This career path has a starting salary of $55,000-$75,000 with an upward salary range of $168,000 in industry according to job postings on Indeed.com and other career sites!