http://today.reuters.com/tv/videoStory.aspx?isSummitStory=false&storyId=c9c26214604941e7288738edce9c9fa563788d47&WTmodLoc=NewsArt-L3-Oddly+Enough+NewsNews-6

Dude was the first person to swim the entire length of the Thames river. Swam 12 miles per day, and took 21 days of swimming.

"During the arduous journey, he slept on a support barge and was been vaccinated against any possible disease."