A turn made at the bottom of a wave, following the drop down the wave face. Often (but not always) the first real move of a ride, a bottom turn is a sweeping, powerful move that enables the surfer to establish speed and direction for the ride. The bottom turn also establishes or re-sets the rhythm of turns to be completed during the course of the ride. Probably the most important turn in surfing as it sets up all other maneuvers.