4. Bethany Hamilton, Competitive Surfer (and shark attack survivor) Who could forget the story of Bethany Hamilton, the 20-year-old surfer who survived a shark attack where she lost an arm, and didn’t just survive, but came back stronger than ever and still surfs today. Hamilton was determined to overcome the accident and get right back on that surfboard–something most of us would never have the guts to do. Her determination and strength has made her an American icon, and we can’t help but be inspired by her spirit. Hamilton just gave birth to her first baby, and she and her baby bump were spotted on a surfboard before she added the title of “mommy” to her resume.