Real fish porn.
Sex is an ancient act, but it hasn't been around forever. From the beginning of time to about 430 million years ago, life forms reproduced by spawning. But sometime between then and 385 million years back, a kind of armored fish known as a placoderm developed things like arms, legs, jaws, and genitals that—if you squinted real hard—made it resemble a human being.
LINK (via:Vice)