Blue blood – has a totally different meaning.
Photo by MEMBERHS / exopixel / Prostock-studio / Shutterstock / The Atlantic.
Horseshoe crabs are sometimes called “living fossils” because they have been around in some form for more than 450 million years. In this time, the Earth has gone through multiple major ice ages, a Great Dying, the formation and subsequent breaking up of Pangaea, and an asteroid impact that killed the dinosaurs and most of life on Earth yet again. In other words, horseshoe crabs have truly seen some shit.
Yet, I would conjecture, some of their strangest experiences must have…
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