Fisherman films massive shark circling and nudging boat

A fisherman has filmed his terrifying encounter with a great white shark just a kilometre from one of Adelaide’s most popular beaches.

Video captured by Matt Robertson shows the six-metre shark circling the small fishing boat, and nudging its motor, off Semaphore Beach about 9am today.

“It’s a f—king great white, oh my god!’ Mr Robertson, who was aboard the boat with his father, can be heard saying.

“So glad I didn’t get into the water before,” he adds.

Fisherman Matt Robertson captured the encounter on camera.

The six-metre great white circled and nudged the small fishing boat.

For several minutes, the large predator circled the vessel, before retreating into deeper water.

Beachgoers told 9NEWS they were shocked the nail-biting encounter unfolded so close to the swimming hot-spot.

“We're going to get this beach packed tonight, so pretty scary for everyone,” one swimmer said.

This morning’s incident is the latest in a series of encounters in South Australian waters.

Earlier this week, a five-metre great white circled a fishing boat near Port Victoria, on the Yorke Peninsula.

This year has seen a dramatic surge in the number of shark sightings along the state’s coast, with 139 reports in 2017- the highest number in four years.

Watch the full news bulletin on 9Now

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