Swimming with a Sailfish

When I initially started swimming this morning the pool was so empty that I had my own lane, plus there was even a completely open lane! I was happy. Then it happened. The first person came in where it was necessary to double up. Why pick me? I knew this guy was a fast swimmer before he even got into the pool - had that swimmer body - broad shoulders and the European style trunks that are just slightly more modest than a Speedo. He jumped in and quickly did down and back before I even got one length in. Oh and did I mention that he scared me because he was underwater for so long (half the length of the pool) before he popped up out of the murky water (the Y is having problems with the cloudiness of the water)? Well according to Rob & Clare's Travel Almanac, as well as verification with a few other sources, the fastest fish in the world is a sailfish. Apparently this dude was raised by a pack of them.