The indentations on a golf ball are commonly called "dimples." Dimples are the small, shallow depressions that cover the surface of a golf ball. These dimples are strategically designed to enhance the ball's aerodynamics and improve its flight characteristics. By creating turbulence in the airflow around the ball, the dimples reduce drag and increase lift, allowing the ball to travel farther and more accurately through the air. The specific pattern, depth, and arrangement of dimples can vary across different golf ball models, each with its own intended performance characteristics.