The photo was taken at the entrance to Katlian Bay at the end of the road in Sitka, Alaska. The whale is coming up to scoop up a mouthful of herring (the small fish seen at the surface around the kayak).
The kayaker is a local Sitka Dentist. He apparently didn’t sustain any injuries from the terrifying experience.
The whale was just around the corner from the ferry terminal, and all the kayaker could think at the time was: "Paddle really fast!"