Blind..but swim very well

Oh what a nice and sunny Saturday morning. yay! not working today! Went swimming in the morning. You know what...I was lying on the bench at the pool side to relax and try to get some breeze from the sun with my eyes closed. It was quiet and no body around. Suddenly "knock..knock..knock". ohh?? I opened my eyes and I saw a man standing next to me holding a blind-stick hitting the side of my bench trying to look for a place to sit. Oh shit! I'm here! He couldn't see! "Oops..sorry, somebody's here!" Then only he realised that I was there. He said sorry, and walked away to other place. He was actually going to swim in the pool! Ya..I saw him swim, very good and fast indeed, from one end to another. Cool..