Every year, there is an event at Disney called the Danskin Triathlon. You do a .8k swim, 19k bike, and a 5k run! Around 1500 women do it. The weird part is they have to swim in Bay Lake. Disney did/does not allow people to swim in the lakes. Does this mean the lake isn't deadly?
http://www.danskinwomenstri.com/Orlando_-_Disney_World/Orlando_Course.htm
http://www.danskinwomenstri.com/Orlando_-_Disney_World/Orlando_Course.htm