an amazing young man. he shared the details of the attack. >> we were playing on the beach. i went to wash off the sand. >> how deep were you? >> two, three feet. enough to crouch down. >> you were not swimming? >> i waded into the water. maybe here. crouch down. gotten all the sand off. getting ready to go back in. >> reporter: when was the first timeized something was near you? >> i took one more step forward. i felt something big move against my ankles. and the calves. and so i was like i'm getting out of here. >> you felt it underwatter? awe i started backing off. bit my arm. jumped out of the water. i think my hand was in the water. it grabbed that and climbed its way up. >> jumped out of the water. >> it was out of water on my arm. >> you looked down and saw the shark on the arm. >> all i remember seeing of the shark. the top of its head basically.