The folks from Woods Hole Oceanographic Institute said that this photo was most likely of a basking shark, a harmless plankton feeder. Still, if I had been in that kayak, I probably could have set a new Olympic record or some kind...
Why would a plankton feeding basking shark stalk a kayak? That guy was being followed for quite a ways according to the story, wood's hole is wrong again I would say.
Basking sharks are medium brown on the back and fins, white sharks are typically gray or black.











