A few months ago a video we posted of Mark Rutzen, aka "The Sharkman", petting a great white on the nose went viral, racking up millions of views.

Now Mike and the Nature Footage guys are back and at it again - only this time they've actually jumped in the water with the beast.

Yep, there's no shark cage there, no special protective gear and in fact nothing to stop the great white taking the guy's arm off. Or biting a huge chunk out of him... Crazy.

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