There was a time when, to be a biologist, you either had to be able to draw well (or be able to may someone to do your drawing for you). Toilets also did not flush. It was a rough time. You can revisit some of that magic at The British Library’s Flickr page where there are literally oodles of images from old books provided free from copyright restrictions, because the books are old.
I don’t know what this critter is*, but I am glad that I am a lot bigger than it is. I think I’m bigger than it…
*It literally comes from a tome entitled The British Miscellany: or, coloured figures of new, rare, or little known animal subjects, etc. vol. I., vol. II
The British Library’s Flickr account is a bloody rabbit hole of lovely. And, all the images are being released for free without copyright restrictions*. I won’t guarantee that there is something there for every flavor of nerdery, but, if you don’t find your interests represented by something here, I think you need to seriously question your life choices.
*The British Library does offer you the option to purchase higher-than-screen quality images, which seems like a workable model to me.