tourists posted a video of themselves dragging a shark onto shore .
the clip shows them catching the huge shark with a fishing line on a new zealand beach .
they stand just centimetres away from the beast who thrashes angrily .
catching and releasing a shark is a legal sport in new zealand .
it 's crucial right techniques are used for safety of fisherman and shark .
the shark should not be touch minimally , but in the video the tourists drag the shark in and pose for photos holding the creature .