This man is at the right place at the right time. He must have noticed the bubbles from the feeding whales and headed close. Whales will blow rings of bubbles to corral krill and small fish into a cluster, and then they come up from the bottom and catch them. The birds are also waiting for the whales and feeding at the same time. You can also see that the kayaker was hoping, or expecting the whales to surface close by as he had his camera on his paddle and in a good position to capture the spectacular video!