It's every fisherman's worst nightmare – an enormous great white shark emerging from the depths right beside your tiny boat.
Well, not so for this fisherman. This video, currently trending on YouTube and said to be shot off the coast of South Africa, shows the man reaching out and giving the deadly predator a pat on the nose, before nudging him gently back into the waves.
Take a look:
Additional sources: mirror.co.uk, travel.aol.co.uk