Terrifying moment 12,000ft tandem skydive goes wrong when parachute lines get twisted - but rookie jumper knows just what to do

A tandem skydiver knew just what to do when the lines of his instructor's parachute got twisted during a 12,000-ft jump. 

GoPro footage shows Kristian Porreca, 24, taking to the skies above Wollongong, Australia, for a once in a lifetime trip.

But the rookie jumper, attached to tandem master Mick, had to think fast when the lines of the parachute became tangled and put them both in imminent danger.

GoPro footage shows Kristian Porreca, 24, taking to the skies above Wollongong, Australia, for a once in a lifetime trip

In the clip, Kristian and Mark ascend to 12,000 feet before launching themselves out of the plane. 

Kristian smiles and gestures toward the camera as the pair free-fall through the clear blue skies.

Mark then pulls the toggle to launch the parachute to slow their descent.

But the pair are sent into a dramatic spin as the lines become tangled with Mark repeatedly glancing up in a panic. 

But the rookie jumper, attached to tandem master Mick, had to think fast when the lines of the parachute became tangled and put them both in imminent danger

Eventually they were able to untwist the lines as they both beamed in relief before landing safely back on the ground

The duo kept their cool as they worked together to untwist the tethers.

Kristian later said: 'Having watched several gone-wrong videos, I knew to kick my legs together to use momentum to spin around whilst Mick was using his hands to pull apart the lines.'

Both Kristian and Mark were overjoyed with relief as they eventually landed safely back on the ground.