Did you know sex originated in an ancient Scottish lake? No? Well you’re in luck — the very first sex act on the planet is finally available for you to watch! Check out this digital recreation of the first animals to ever use sexual intercourse for internal insemination. These Microbrachius dicki (aka fish) are really getting down and dirty.

What do you think about how sex has evolved over time? Are you surprised that this was the first animal to have internal sexual intercourse? Let us know in the comments!

Find out more here: http://bbc.in/1CHLoWz

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