Ant Williams is a world-record-holding freediver, performance psychologist, and mental strength coach who has spent two decades exploring what it means to perform under pressure. Before diving under Arctic ice on a single breath, Ant coached elite athletes, including MotoGP riders, big-wave surfers, and extreme sports competitors, helping them master fear, focus and high-stakes performance. But despite his success in the field, he felt something was missing. To truly understand what it means to operate at the edge, Ant turned to freediving, not because he was born to it, but because it scared him. He trained himself to a world-class level and went on to set multiple world records, including the deepest freedive under ice (70.3m) and the longest distance swum under ice (182m), performed in near-total darkness in sub-zero water. Today, Ant combines insights from sport psychology and extreme adventure to teach others how to harness pressure, reframe fear, and perform at their best when it matters most. His immersive dive has been featured in Apple's Adventure series on Apple Vision Pro, offering a groundbreaking look at human potential in the world's most unforgiving environments.