Several members of the G:TB editorial staff and a fair number of our readers have spent time on Chatham, MA's Nauset Beach. It's fair to say that we're glad we missed out on this kind of excitement.
The kayaker in question, Walter Szulc, was making his maiden solo kayaking voyage when the 12-14 foot great white shark started checking him out. "Look at my chest and arms," said Szulc. "I'm a meaty bastard. No wonder the shark wanted some." (It's possible that Szulc actually said, "I had a deep swallow, that 'Oh my God' moment, then I just paddled," as reported in the Boston Globe, but nobody trusts the Globe anymore.)
Note that the shark in question waited until my family and I left Chatham (we lunched at my cousin's coffee shop/deli on the same day as the shark sighting) before sniffing around homo sapiens. I flattened a chipmunk with the family truckster during our visit - seems word got around about my Lord of the Cape and Islands badassery.
Reporters are still making calls to determine why Dave was in the foreground of this scene.