A Pacifica shark attack almost claimed the life of one kayaker who was grabbed from beneath his tiny boat and wrestled from side to side as he hung on for dear life.

According to ABC7 News in San Francisco, Micah Flansburg was fishing 100 yards off the Pedro Point in Pacifica when a 12-foot long Great White Shark lunged for his kayak.

A still visibly shaken Flansburg told ABC7,

"It almost instantly, the shark came and it hit the bottom of the boat, lifted the boat up, and grabbed ahold of it and just started shaking the whole boat, and I'm just hanging on to this thing."

The Pacific shark attack victim continued, "I had my paddle on my lap, and my fishing pole and a bottle of home brew. The next thing I know, every single thing I had went flying in the air, it hit me so hard."

Micah's father-in-law, Ross Weber, witnessed the Pacifica shark attack from only 10 yards away since they were both fishing together. Since Flansburg was unable to remember exactly what he was shouting his father-in-law clued us in:

"Yeah, it was a lot if religious stuff, 'Oh my God. Oh my God. Oh my God!'" said Webber. "He was riding like a bull and keeping his balance and I was like, 'Go for it! Don't fall in the water!"

"It was intense. It was just like the Discovery Channel where you see the eyes roll to the back of the head and the pink gums and his teeth bared," Flansburg told ABC.

The Pacifica shark attack now means the beach will post signs warning of possible sharks in the area.

Reported shark attack news has reached a decade high in 2012 with about 80 unprovoked attacks reported worldwide, seven of which ended up being fatal for those involved.

Eight of those attacks were off the US Pacific coast and another 26 were in Florida, a state which counts for half of all U.S. attacks, on average.

North America alone reports half of all shark attacks worldwide, but researchers are baffled as to what combination of meteorological, oceanographic, economic and social factors are to blame for the trend.

KPBR reports on the Pacifica shark attack: