I honestly have no clue how they got some of these shots, it seems like it would be almost impossible to get the timing right but somehow they did it. I watch a ton of nature shows but this includes stuff I haven't seen elsewhere before for sure. It's so unique that it really makes you think about the world in a different way.
My one critique is that I think the drone shots where they move over landscapes quickly might actually be a little too quick at times to be pleasing. At least watching on my MacBook Pro it's a little nauseating. But that's only a fraction of the show so I won't weight it too highly.
I enjoy the narrator. Maybe a little hokey, sure, but actually that's sort of on point for a nature documentary and I appreciate his friendliness. I like the theme of "heros".
Somewhat relatedly, one other amazing thing about this show is that it isn't just individual shots, rather they seem to have followed individual animals for a somewhat extended duration, which makes the storytelling more compelling.