There were 17 men's swimming events with Gold Medals. Michael Phelps got 4 of them, Sun Yang won 2 Gold Medals Other athletes who won a gold medal in swimming are listed on the related link
$1000
Adlington
No, he is an 8 time olympic gold medal winner in swimming
Yana Shemyakina of the Ukraine won the Individual Women's Epee gold medal in the 2012 Olympic Games.
Uwe Daßler
Paris Hilton
An Olympic Gold medal is worth 25,000 U.S. Dollars
Cameron van der Burgh in men's 100 meter breaststroke swimming on July 29.
Russia beat Brazil in the gold medal game. Russia beat the best of 5 match.
Australian. Fanny Durack of Australia won the first women's gold medal in swimming at the 1912 Games in Stockholm.
2012 london olympics
No such event