A task to explore the murky depths of the waters off West Melbourne in Florida turned to be death-defying for Jimmy Roseman, a scuba diver. He was actually approached by a deadly great white shark when he was 90-ft-deep off Florida's Vero Beach. He must be considering himself very lucky to survive after managing a narrow escape from a certain death.

The shark appeared suddenly off Vero Beach while Roseman had a GoPro camera rolling. Had he not poked the predator with his spear gun, he would have become the meal of the shark. A video that shows the diver's encounter with the shark has gone viral on YouTube.

It can be seen in the video that as Roseman moved across the ocean floor, the shark emerged. However, the shark vanished for sometime only to reappear moments later and this time with clear intentions of giving Roseman a run for his life.

But after a few terrifying seconds, the predator decided to move away from the diver at the last moment. The diver can be heard in the video heaving a sigh of relief.

The 12-foot long beast circled, got closer and closer until the West Melbourne-native resorted to prod it with the armament.

"In the video, it did look like it was kind of far away. But the whole time it was about six to seven foot away from me. I had to poke it really hard that last time", said Roseman.

Roseman never imagined in his dream that his decision to go into the depths of the Florida coast will make him realize a very thin line between death and being alive.