TED-ED: Why do we harvest horseshoe crab blood? - Elizabeth Cox

Horseshoe crabs are captured for their blood, which is used in medical testing due to its sensitivity to bacterial endotoxins. Their unique immune system is a result of their open circulatory system and bacteria-rich habitats. However, human activities, including blood harvesting and habitat destruction, threaten their populations. Conservation efforts and synthetic alternatives are being explored to reduce reliance on horseshoe crab blood.

What challenges do horseshoe crabs face due to human activities?

What efforts are being made to reduce reliance on horseshoe crab blood?