A nude swimmer in waters off a "clothing-optional" beach on Hawaii's Big Island was attacked by a shark of undetermined species, HawaiiNewsNow reports.
The swimmer, a 54-year-old man, was attacked about 100 yards out at Kehena Black Sand Beach in Pahoa.
He was wearing fins and suffered tendon and nerve injuries to his right ankle when the shark tugged at them. But he never saw the shark that did the damage.
"It felt like something just kind of sharp just kind of sliced, kind of scratched against my ankle," the man told HawaiiNewsNow.
The swimmer headed for shore and was helped to safety by fellow beachgoers.
Officials classified the injury as a shark attack based upon the bite marks on the ankle.
The man is now recovering from the attack in a local hospital. Meanwhile, officials at the beach have posted shark warning signs.