Must watch: Diver records terrifying close call with shark

See Shark Make Surprise Lunge at Divers in Cage

Two men got the shock of a lifetime when a great white shark slammed into the side of their cage while diving off the coast of South Africa -- and they have the footage to prove it.

Reddit user paintball6818 posted the shocking footage online Sunday of his adventure in Gansbaai, South Africa.

Related: See photos of recent shark sightings and attacks around the world:
Recent shark sightings, attacks
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Must watch: Diver records terrifying close call with shark
Children play on a shark net at Little Manly Cove as shark experts assess cutting-edge technologies to counter attacks at a summit in Sydney on September 29, 2015, following an 'unprecedented' spate of encounters in eastern Australia this year that has left one dead and seven injured. Australia is home to one of the world's highest incidents of shark attacks, with the two-day summit, which include researchers from the US and South Africa, organised in part to address community fears after the recent incidents on the north coast of the most populous state New South Wales. AFP PHOTO / William WEST (Photo credit should read WILLIAM WEST/AFP/Getty Images)
SYDNEY, AUSTRALIA - JULY 21: Australian surfer Mick Fanning speaks to the media during a press conference at All Sorts Sports Factory on July 21, 2015 in Sydney, Australia. Fanning escaped a shark attack in Jeffreys Bay, South Africa during the 2015 J-Bay Open. (Photo by Mark Kolbe/Getty Images)
Two teenagers sit next to a surfboard reading 'For you my Titi' during a march in tribute to a 13-year-old boy attacked and killed by a shark three days ago, on April 15, 2015 in Saint-Paul on the western coast of the French Indian Ocean island of La Reunion. It was the 16th shark attack on the island since 2011 and the seventh loss of life. AFP PHOTO / RICHARD BOUHET (Photo credit should read RICHARD BOUHET/AFP/Getty Images)
BALLINA, AUSTRALIA - FEBRUARY 10: A lifeguard patrols Shelly Beach on February 10, 2015 in Ballina, Australia. Beaches in northern NSW remain closed after Tadashi Nakahara, 41, was killed on Monday morning when he was bitten by a large shark at Shelly Beach. (Photo by Chris Hyde/Getty Images)
The short video shows him and another person cage diving when a Great White Shark suddenly comes racing into sight and towards the two.

SEE ALSO: Selfie deaths now outnumber shark attack deaths

The shark lunges at the cage at an alarmingly rapid pace, ensnaring its teeth in the metal rails and biting down on the edge.

"Holy s***!" one of them exclaims, clearly taken aback by the close call.

Watch this surfer fight off a shark attack on live TV:
Surfer Fights Off Shark Attack on Live TV

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