Drugs.
Bribe the judges
Maybe injure the other swimmers secretly and win by default?
The best successful Olympic swimmer is Federica pellegrini, an Italian.
she is an olympic swimmer.
Micheal Phelps
The Tarzan actor who was also an Olympic swimmer was called Johnny Weismuller, I believe.
Yes, Dawn Fraser is an Australian Olympic champion swimmer.
Well
5.2
Annette Kelllerman
Dara Torres at 41.
15 and older