This is an animated look at the part of human reproduction you don’t normally see on video loops on the internet (so if all you’re seeing now is words or a still picture, clicky the linky!).
So many babies! Embryos like… like… embryos! A veritable human-building spiral factory!
I found this on the Educational GIFs subreddit, where the user “hellofromthemoon” has done other fun stuff.