In the clip, you see the huge shark grab the line, while the family watch on helplessly.
The predator then comes within inches of the boat in an ominous display.
“Holy s**t he's bigger than the boat," a woman yells.
“I’m s***ing myself,” she adds.
The shark then circles the boat before deciding to swim away, waving its huge tail in the process.
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The woman who filmed the close encounter off the coast of Mallacoota, Australia, says she was on six-man boat that measured 5 metres.
She also revealed the shark was almost as big as the boat.
She then detailed her horror as the huge sea creature approached them.
"One tap and it would've flipped the boat. Definitely an experience I didn't need," she told the Daily Mail.
"I will never get over it.”
Fortunately for the family the shark left and they were able to escape unharmed.
Sharks are renowned for their aggressive nature.
Just last week, a video emerged of one of the sea predators breaching a diver's cage in a terrifying clip.
And only yesterday we saw a jet-skier surrounded by 15 bull sharks in a horrifying video.