Terrifying moment great white breaks into diving cage

Terrifying footage has emerged of a great white shark breaking into a shark-diving cage.

The video, captured in Guadalupe Island, Mexico, shows the moment the shark gets its head stuck between the metal bars of the cage inches away from a diver.

The diver ducks down to the bottom of the cage as the huge shark thrashes for several seconds.

Eventually the great white breaks free and swims away.

''The great white was distracted by smaller fish as it approached some bait and became entangled in the dive master's section of the cage, the filmer later wrote online.

''Fortunately, there were no injuries and everyone surfaced safely,'' he added.

Although the clip was recorded in 2015, it has only just emerged online.