as the film shows, she fought her way back into the competitive surfing world. >> bethany hamilton isothing back. >> reporter: in real life, bethany took the silver at the world junior championships. >> the inspirational, if you will, bethany hamilton. >> reporter: does it feel so different now or are you so used to being on the surf board without your other arm? >> yeah, i'm pretty used to it. it's been seven to eight years, i like, forget what it used to be like. >> reporter: she did her own stunt work for the movie and helped anna sophia robb learn to surf and get over her fear of sharks. >> i figure if she can still get back out there and not worry, then i should be able to, as well. >> reporter: when we met her near san francisco, the water wasn't exactly inviting. so, how do the waves look today? >> it looks a little cold. we're here in northern california and -- i don't know how i'll do but i'm going to just get wet. >> reporter: it was 48 degrees. unlike the locals, she didn't have a hood or booties, but she still gave it her all. what do you have to say to people who watch yo