Filmed last Sunday, the video shows a man performing at a “crocodile show” on the tourist island of Ko Samui in Thailand.
In the clip, the man crouches before a crocodile in its enclosure.
He then appears to carry out a taming procedure with wooden sticks and the croc’s mouth appears to remain open.
As part of the show, the sticks are thrown to one side and he shoves his entire head into the motionless crocodile’s mouth.
He holds his position for ten, nail-biting seconds.
But suddenly the crocodile clamps its jaws on his head with sickening snapping noise.
The reptile then thrashes around.