The visibility of big wave surfing has grown exponentially in the digital age, with the feats of the small, global tribe of surfers taking on 5-story waves available on every social media feed. But as the stakes get bigger, the preparation has gotten more sophisticated. In this preview of next week's podcast with guest Ian Walsh we talk about the evolution of safety in the water, from the man who introduced lifeguarding in southern California to the Co2 powered wetsuits saving the lives of big wave mavericks.