After taking a few photos with the shark, Gianni and his father let it go.
The victim, who has learning difficulties, was bought the computer by her parents to chat online to other young people.
Instead, she was targetted by 54 year old David Spence, a stranger and sexual predator using the online name Amber.
Once contact was made, the victim was introduced online to Amber's boyfriend Robert and her father David, all of whom were Spence.
EMERSON - A 13-year-old boy from Emerson caught a shark believed to be over 200 pounds while fishing at Long Beach Island over the weekend.
"I started reeling it in and it didn't really feel that big at first.
And then once I got closer to shore, I felt the head moving so I knew it was something different,” says Gianni Mandile.
The boy’s father first thought that it was a sting ray, but says that once he saw the tail, there was no denying that it was a shark.
Gianni and his father began wrestling to reel the shark in.
They found that the hook only got the side of the shark’s mouth.
"If he popped the hook, I was going to chase the thing down and pull it out myself,” says Joseph Mandile.
“It’s a big catch for [Gianni] and I’m proud of him.” Gianni says that he was able to reel the shark close to shore and his father grabbed it by the tail to bring it in closer. “I was scared at one moment when the shark turned and it looked like it could get me and I kind of stumbled but really I wasn't. Gianni and his father have been fishing since he was 3 years old.