Not too many details though I was fishing about 50yds from him in my kayak when I heard a large splash and a voice calling for 'help' on the vhf. Apparently the shark charged his 16ft kayak and munched the front side leaving tens of slots in his yak. He was immediately thrown off and when I talked with him, he said that he only saw the head of the shark chewing the kayak which was about 3.5-4ft wide. He tried to get back on the kayak twice before thrown off again by the jostling of the yak by the shark. Thankfully, the shark lost its interest in plastic and ventured off. He paddled with a friend of mine back to the beach where we launched while I stayed behind to stow my stuff into my yak before heading back in.