I made a timeline charting the invention of fucking.
Partly based this on the organism Microbrachius Dicki which I read was the first-known animal to stop reproducing by spawning and instead mate by fucking. To be 100% accurate though the graph should mention that after the Dicki died out fucking also stopped for a few million years before being brought back by the ancestors of sharks and rays.
And this was the article I read that in, also fun fact:
In the article there's also a cute little diagram of them holding hands while they do it:
So romantic it hurts