Mark McCracken was kayaking and fishing a half-mile off the coast of Santa Barbara when a hammerhead shark began circling him and trying to attack his kayak. The shark was relentless, even after he gave it several good whacks on the head. Now all his friends and strangers he meets in bars will be forced to believe this story, because McCracken had a helmet cam to record the entire terrifying encounter. 

I was trolling for bonito yesterday when out of nowhere this tweaked out hammerhead started ramming and biting my kayak. I had to hit him over 20 times before he finally gave me some space but still stalked me for a half mile all the way back to shore. Even after I was on shore, he paced back and forth in about 3 feet of water like he was just waiting for me to come back out. Pretty bizarre and crazy experience to say the least.

Sources: Fox 5