Witnesses say the man was boogie boarding with a friend when the shark aggressively attacked. The swimmer, William Lytton of Scarsdale, N.Y., was wading about 30 yards off of the shoreline when he was bitten - becoming the first person to be attacked by a shark in MA waters since 2012, according to WBUR.
The incident marks the first fatal shark attack in MA since 1936.
Newcomb Hollow Beach, where the victim was swimming, has a sign saying "Be Shark Smart" warning swimmers to avoid going near seals and to swim near the shore.
The most recent shark attack before Truro happened in 2012, when Christopher Myers suffered deep lacerations on both legs after an encounter with a great white.
A 61-year-old NY man was severely injured August 15 after fighting off a shark off Truro, about 4 miles north of Saturday's attack.
At approximately 12:30 pm on Saturday, September 14, a person was allegedly [sic] bite by a shark 300 yards south of Newcomb Hollow Beach in Wellfleet.
"It was like right out of that movie Jaws".
Witnesses say he was boogie-boarding in the sea off Newcomb Hollow Beach when the attack happened at around 12pm local time (5pm United Kingdom time) on Saturday.
He said he saw the man kick at something behind him and then glimpsed a flicker of a tail from the water.
"We've been surfing all morning right here and they were just further down", she said of the two boogie boarders.
He was pulled from the water, given first-aid and taken to Cape Cod Hospital, where he died, police said. "Right spot, wrong time, I guess".
Cape and Islands District Attorney Tara Militmore named Mr Medici has the man who had died.
The legislators offered help to all Cape Cod towns in responding to risks posed by shark activity. Joseph Troy Jr., a 16-year-old, was killed by a great white in Mattapoisett on Buzzards Bay in 1936.