bathymetric chart

A bathymetric chart is a specialized map that shows the shape and depth of the underwater terrain of a body of water, like the ocean or a lake. It uses color gradients and contour lines to represent different depths, much like topographic maps do for land elevations. These charts help professionals understand underwater features such as mountains, valleys, and trenches, which are essential for navigation, scientific research, and environmental management. Essentially, a bathymetric chart provides a detailed, visual representation of what lies beneath the water's surface.