Alone in his tiny plastic sea kayak, marine biologist Trey Snow had hoped to stealthily track a great white shark. But he had the shock of his life when he spotted a giant fin and realised it was he who was being stalked - by surely one of the most feared killers in the world.
The magnificent creature initially dived to the seabed, inspecting the kayak from below, before rising menacingly to the surface. Luckily for Trey, the 13ft-long shark was more inquisitive than hungry.
Trey was just one of a team of scientists hoping to discover why a large group of great whites, which travel off southern Africa's tip during the summer, regularly swim so close to the beaches.
They decided to venture into the deep blue in the quietest and most unobtrusive vessel they could think of - a bright yellow sea kayak. Amazingly the sharks carried on as normal, giving the scientists a unique insight into their lives.
This incredible picture was taken by wildlife photographer Thomas Peschak - who had to tie himself to the high bridge of a nearby vessel and lean precariously over the ocean before he could get his shot.
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