South African diver barely escapes great white shark attack

I've often been out having a surf and thought to myself: "The water looks a bit murky. I wonder what's swimming underneath me?" Then I stop and decide to rather switch off and not think about things like that.

Read: Surfers go head-to-head with shark at Jeffrey's Bay event

But imagine that you're spear fishing and out of the depths comes a massive great white shark? This is exactly what happened to this South African diver. According to GoPro's YouTube channel, he was swimming off the coast of KZN when all of a sudden, he came into contact with a great white shark. What?!

Read: Man almost loses hand in attempt to grab shark

In the video, you can hear the panic in his voice as he screams and shouts 'white, white' and circles his flippers.

The muffled panic in the diver's voice is clear that this encounter was a close call and it's terrifying. I know that if I was around to witness it or even was the diver, I would have definitely freaked out. 

How would you have reacted?