An Australian bodysurfer was enjoying the water this weekend when he felt an animal, believed to be a bull shark, bite down on his arm."I went to move out about a bit deeper to get a better wave," Paul Kenny, 50, told the Australian Broadcasting Corporation. "And just put my head down and headbutted it, and then it just grabbed me."Kenny said he recalled seeing news coverage of pro surfer Mick Fanning's close call with a shark. Fanning escaped a shark attack by punching the animal during an event in South Africa in 2015."I started punching it until it let go and then started getting back out of the surf as quick as I could holding my arm cause there was blood everywhere," Kenny said. Witnesses on the New South Wales beach said Kenny seemed calm after the attack, explaining the surfer "initially thought he hit a rock and then realized it was a shark attacking him."Kenny was taken to John Hunter Hospital in stable condition. He suffered a "significant amount of puncture wounds," and needed 20 stitches to his right bicep. "He's got a significant bite to his arm," an inspector with the ambulance said. "We believe he was surfing at the time and somehow bumped into a shark in the surf. The shark then at that point, turned around latched onto his arm; he managed to hit the shark on the head with his fist and, at which point, the sharked moved on."Kenny told the Australian Associated Press he has no ill will toward the shark. "I was in his world. He was just going about his business and I headbutted him so he retaliated," he said. Kenny said the most frightening part of the ordeal was realizing what was biting him. Reporter: "When you lost that dorsal fin, what was the first thing you were thinking?Paul Kenny: "Where is it and is it coming back to take my legs? That's what I was worried about. If it took my legs, I'd be gone, I wouldn't have been able to walk out, get out so...and there was no one else in the water with me. No one at all."