Swimmers don't get paid much, as they have to be 'amateur' to compete in the Olympics. Most of their money is made from other jobs, and if their good enough advertising and sponsors. (Commercials, magazines, ads, etc.)
the koalas from ancient Greece are now swimmers from Africa
on a site
they swim and they swim a lot
what about Cullen Jones? he is a black olympic swimmer. he was at the 2008 games in Beijing.