People who dare dive with the whales know it’s inherently dangerous. However, as close as Nan Houser came to this remarkable animal, it was no danger to her, but pay attention to the top right corner of the screen at 2:24 mark.
You could see in the footage that the 63 year old biologist was so engaged playing with her gigantic friend that she failed to see the incoming danger, a big shark who was preparing to put an end to it. Nan may have failed to see it, but the big whale certainly hasn’t. It gently nudged her with its massive head and even offered its enormous fin as protection. I’ve never seen a whale get so maternal with a human before.