A fisherman is missing after he was reportedly pulled into the ocean when he hooked a "huge" ahi tuna off the coast of Hawaii.The incident occurred at approximately 5 a.m. on Sunday morning when 63-year-old Mark Knittle of Captain Cook, Hawaii, was fishing with a friend on a boat near Hōnaunau on the west coast of the Island of Hawaii."Knittle and a friend were fishing near the 'C' buoy, four miles outside of the Hōnaunau Boat Ramp, when Knittle hooked an ahi," the Hawaii Police Department in a statement detailing the accident."The friend attempted to jump in after Knittle but could not see him anywhere."The Hawaii Fire Department and Coast Guard personnel were immediately dispatched and have been conducting a continuous 72 hour search for Knittle."