A duck dive is a technique where a surfer submerges the nose of their board beneath an oncoming wave, allowing them to pass through it rather than being knocked back toward shore.
To execute: as a wave reaches one board-length away, grip the rails and push the nose underwater while driving forward. Once the nose is submerged, kick the tail down with a knee or foot and let the wave pass overhead, then angle upward and continue paddling.
Duck diving suits shortboards and mid-length boards. Longboards are too buoyant — longboarders use the turtle roll instead.
Without the duck dive, surfers are repeatedly pushed back toward shore. OCSC teaches this as part of the intermediate progression after students have solidified their pop-up. Timing is the most common challenge.