It’s believed the shark could also have claimed a second victim.
The mauled body of a man was found on La Lucia beach at Durban late last week.
Shawn Herbst, a spokesperson for emergency responders Netcare 911, said the “decomposing body” had been found by a man walking along the beach.
“When medics turned the body over for assessment, it was found that a portion of the right upper arm and right chest area were missing, with multiple shark bite marks clearly visible,” Mr Herbst said.
The body has been turned over to police, who will determine an official cause of death.
The victim has not yet been identified.
Mr Herbst said a second body had also been reported at the same beach, but it was unable to be found.
He said it had likely been washed back out to sea.