The swimming style characterized by the swimmer's face in the water is known as freestyle. In freestyle, the swimmer rotates their body while using a flutter kick and alternating arm strokes, keeping their face submerged to minimize drag and improve speed. This technique allows for efficient breathing by turning the head to the side while maintaining a streamlined position in the water. Freestyle is often the fastest swimming style and is commonly used in competitive events, making it a fundamental stroke for swimmers to master.