cross-posted from: https://lemmy.world/post/32524920
I watched several videos on a Combine Harvester's inner workings and I still don't understand how this thing works.
https://earthlife.net/nautilus-anatomy/#The_Nautilus_Eye
This is a great read; it posits that nautilus did have a mucous layer that is no longer present, but other cephalopods' complex eyes may have evolved from that
I love these little guys! I may have known before, but I learned the eye thing from this video yesterday actually (just to give credit where it's due):