Documentary, natural history--David Attenborough, Seas to Skies, The First Animal.

https://ihavenotv.com/from-the-seas-to-the-skies-rise-of-animals-triumph-of-the-vertebrates Fascinating, Attenborough travels all over, talks to experts and explains so well. Painless learning. Also, excellent animation and illustration. Not at all stuffy, kmk 7-20-2018