Good to know. Next time I see a horseshoe crab I won’t just run at it screaming “Can I see your blood?!”

The crabs react better to it than most Uber drivers though.

Horseshoe crabs are vexing. We capture millions for their blood (useful for testing the purity of phama). There are alternatives, but biologist worry that the animals will suffer more if they become useless to humans.

Keep your eyes peeled

Fun horseshoe crab fact: horseshoe crabs have like five different types of eyes. Even that tail is basically one big eye, covered in photoreceptive cells. Those fuckers are really good at crawling around in the mud.

I failed crab in high school :(

Definitely going to put on the resume