Who knew horseshoe crabs were the Pikachu’s of the sea?

No reason to evolve if you’re already a crab.

When humanity found out how long horseshoes crabs had been around, unchanging and perfect, they decided to name their divine human leaders after them.

That is why royalty are called ‘blue-bloods’.

Perfection is the end of evolution

Two things: first, horseshoe crabs almost certainly have changed/evolved considerably over four hundred million years, just in aspects of their physiology that aren’t fossilized. Second, horseshoe crabs have like nine different types of eyes; even that tail is essentially one big eye, covered in photoreceptive cells. We humans consider ourselves the “dominant” species, but I don’t think we could handle crawling around in slime and mud for four hundred million years quite as well as they have.