First things first, a big shout out to Imgur for making the internet a far more interesting place. That stated, I will admit, when I first saw this I was in awe. I know fish are unique creatures mentally (that is my flowery way of saying I don’t know much about fish) but I didn’t know they quite functioned at this level.
Using a jellyfish as a living, moving shield is like some Game of Thrones war tactic stuff, so how anyone could NOT be impressed by this I do not know. Plus, it is mesmerizing to watch. I bet there is a fish version of Tyrion in there and he came up with the idea.