Seabed bathymetry is an important component of marine geology and geomorphology activity. so as cartography and paleogeography. geoecology and hydroacoustics and other applied areas of research also. General seabed digital elevation model (DEM) could be the basement in the definition of "key" shelf areas for further detailed study. https://www.roneverhart.com/DeRoyal-LMB-Spring-Finger-Extension-Assist/