AARON LIEBER, LIEBER FILMS

Growing up near a beach in Kauai, Hawaii, BETHANY HAMILTON felt drawn to the ocean waves. As a child, she surfed competitively and claimed many victories.

But Hamilton's life changed in 2003. As she was chasing waves, she was attacked by a 14-foot tiger shark. Hamilton was just 13 years old. She lost her left arm in the attack. But the rising surfing star’s career was not over. Within weeks, she was back on her surfboard. “My love for the ocean was stronger than my fear of sharks,” Hamilton told TIME for Kids.

The documentary Unstoppable, out July 12, captures Hamilton’s career comeback. In 2016, she beat a six-time world champion in a major World Surf League competition. In 2017, she was chosen for the Surfer’s Hall of Fame. Hamilton hopes her accomplishments can inspire others. “No success is easy," she says. "You’ve really got to work at things and not just expect them to come."