As reported on hawaii247.com:
Fire/rescue units responded to a 5:10 p.m. alarm Wednesday (Jan 16) to Kiholo Bay for a man bitten by a shark. A 43-year-old man was surfing with a friend at Kiholo Bay when he was bitten on the lower right arm. Bystanders on the beach were attending to the bitten surfer when medics arrived. The victim was taken by ambulance to North Hawaii Community Hospital. The beach was closed and shark sighting signs posted after the attack.