Arthur Medici, 26, of Revere in MA in the US died at Cape Cod Hospital in Hyannis after he was given first aid and CPR.
The man was pronounced dead at Cape Cod hospital in Hyannis.
The beach was closed as National Park Service Rangers and Wellfleet police conducted an investigation.
The most recent fatal shark attack in MA was at Hollywood Beach above Mattapoisett Harbor in Buzzards Bay in 1936.
A 61-year-old man from NY was seriously injured last month, just five miles away, after punching a shark in the gills off Long Nook Beach near the town of Truro.
Local fisherman and surfer Joe Booth said he was on the shore and witnessed the attack.
On Saturday a Cape Cod politician told the Associated Press officials who did not take more aggressive action against sharks bore some responsibility for the fatal attack.
The attack occurred on Saturday near Newcomb Hollow Beach on Cape Cod. He said the victim aggressively kicked something behind him then he saw a flicker of a tail in the water. Bigelow escaped unscathed. In 2012, Christopher Myers suffered deep lacerations on both legs after an encounter with a great white while body surfing by Truro's Ballston Beach. Booth said. "It was like right out of that movie Jaws".
Hayley Williamson, a Cape Cod resident and former lifeguard who was on the beach at the time, was in disbelief after the man was rushed into an ambulance.
Reinhart said she hoped to discuss the incident with fellow Select Board members before saying anything further.
People were screaming to call 911 and alert authorities that there was a shark attack, he said. "Right spot, wrong time, I guess". It's also the first fatal attack in the United States since April 2015.