Teen shark attack survivor not afraid to swim again

"It's not a life-changing thing to lose an arm."

That's the forward-looking attitude of 16-year-old Hunter Treschl, who lost his left arm during a shark attack earlier this month. Now he's out of the hospital and telling ABC News why he's ready to move on and return to normal life -- including swimming.

Hunter said he's not scared to go back in the water and plans to relearn some of his favorite activities. The teen was born left-handed, so now he'll have to use his right hand.

"I was a pretty avid gamer as well, but I've got plans to get that back," he said. "There's a lot of stuff I can do to play with one arm."

Hunter said he was washing sand off and had only been in waist-deep water for about a minute when the shark attacked.

"It all happened very, very quickly," he said. "I saw the shark on my left arm. It was halfway up my bicep kind of, just attached, and then it wasn't attached anymore."

He said he thinks he and Kiersten Yow, the 12-year-old who was attacked on the same shoreline on the same day, can overcome their injuries.

"We're both young, and as time goes on, prosthetics technology is going to be just unreal compared to what we imagine today," Hunter said, "and it's always improving. So who knows, 30 years, it might be like having a second arm."

For now, Hunter plans to be fitted for a prosthetic arm and says he's looking to the future.

"There is nothing I can really do except focus on the future," Hunter said. "I have no power over a shark bite. I do have power over what I do about it."