Eric Moussambani Malonga (born 31 May 1978) is an Equatoguinean swimmer. Nicknamed Eric the Eel by the media, Moussambani won brief international fame at the 2000 Summer Olympics for an extremely unlikely victory. Moussambani, who had never seen an Olympic-sized (50 meters) swimming pool before, swam his heat of the 100 m freestyle on 19 September in a time of 1:52.72. This was the slowest time in Olympic history by far, and Moussambani had trouble finishing the race, but he won his heat after both his competitors were disqualified due to false starts.
https://en.wikipedia.org/wiki/Eric_Moussambani