HAWAII (USA)- 25-year old surfer Jeff Horton was surfing near Kilauea, Hawaii, when a tiger shark attacked. It grabbed his legs, jerking them. Horton pulled his left leg out of the water and got on the surfboard, but was knocked off when the shark began to chomp on the board.
He rolled onto the shark, grabbed a fin and started punching. Being a former boxer, he gave the shark 8 good punches before it backed off.
See the interview with him on Yahoo Australia Sunrise below: