I was at 180 feet on air. We were narced completely out of our minds. I understood I had to be slow and deliberate with all my actions to avoid additional CO2 that would make matters worse. I was signaling with my light to my buddy "are you okay?" and his head turned to follow the light like a cat following a laser pointer. He remembered everything, but denied being narced. First and last time at that depth for me on air.I have never seen that at any depth.