Did you know that Horseshoe Crab blood is valuable to humans?

American Horseshoe crabs, or Limulus polyphemus, are a species older than the dinosaurs. Reaching up to 60cm in length, with big helmet-like shells and spikey tails, they look like aliens. Did you know their blood is highly valuable to humans? Horseshoe crab blood is worth approximately $60,000 a gallon. What are Horseshoe Crabs? American horseshoe … Continued