Yes it is a screen shot, so many of the photographers here get incredible shots, I though they would like to see another point of view of the creatures taken around the world, that they might not know exists. A one time post to let them know about this terrific documentary will not detract from anyone's own images. The subjects are why we photograph them. I got my degree in photography at RIT and have an original Ansel Adams print on my wall. We studied the Zone System in class as well as understanding the processes behind creating photographs.
BTW there are many posts that informational that do not contain any images, I was trying to convey information not plagiarize the documentary. Sorry if that upset anyone. I did notice 9 positive likes.