Michael Phelps excelled in swimming, where he became an iconic athlete and is celebrated as one of the greatest swimmers in history. His achievements include numerous Olympic medals, setting multiple world records, and showcasing diverse swimming strokes. Phelps' dedication to training, technique, and competitive spirit transformed the landscape of swimming, inspiring a new generation of swimmers. His record of winning eight gold medals in a single Olympics in 2008 remains a landmark achievement in sports history.